php-general Digest 22 Jul 2010 15:14:37 -0000 Issue 6859
php-general Digest 22 Jul 2010 15:14:37 - Issue 6859 Topics (messages 307082 through 307096): Re: XML DOM 307082 by: Benjamin Hawkes-Lewis Does class length slow down performance 307083 by: Sebastian Ewert 307084 by: Ashley Sheridan 307086 by: Sebastian Ewert 307087 by: Jay Blanchard 307088 by: Sebastian Ewert 307090 by: Peter Lind 307092 by: Sebastian Ewert 307093 by: Peter Lind Re: Question about SQL and Graph nodel trees 307085 by: Tommy Pham PHP database interface layer 307089 by: Marc Guay 307091 by: Peter Lind 307095 by: Nathan Nobbe 307096 by: Marc Guay Video lessons 307094 by: Jordan Jovanov Administrivia: To subscribe to the digest, e-mail: php-general-digest-subscr...@lists.php.net To unsubscribe from the digest, e-mail: php-general-digest-unsubscr...@lists.php.net To post to the list, e-mail: php-gene...@lists.php.net -- ---BeginMessage--- On 21 Jul 2010, at 19:32, Ben Miller wrote: Problem: If street2 (or any other field) has no value, PHP is outputting the XML node as street2 /, which is producing a JS error when I try to call: script type=text/javascript.. street2 = x[i].getElementsByTagName(street2)[0].childNodes[0].nodeValue; .../script (Because the requested node has no .nodeValue, I'm assuming???) Question: Can I tell PHP to output the XML node as street2/street2 instead of street2 / so that JS sees that the object has a value, but the value is (blank)? street2foo/street2 is syntax that means a street2 element with one child node: text node foo. street2/street2 and street2 / are different syntax that mean the same thing: a street2 element with no child nodes. Your JS property lookup fails because the street2 element has no child nodes. Rather than changing your XML serialization to have some sort of opaque meaning, why not do one of the following in your JS? 1. Test to see if the element in question has any child nodes before attempting to access the first one: if (x[i].getElementsByTagName(street2)[0].childNodes.length 0) ... 2. Use the textContent and innerText properties to get the text of all/any child nodes. -- Benjamin Hawkes-Lewis---End Message--- ---BeginMessage--- Hi, I'm developing an joomla component and my helper an user classes are crowing bigger and bigger. The helper class is for static use only. Does class size decrease performance of my php scripts, even for static usage? Is there a general rule when to split a class to keep performance up? Thanks for reply, Sebastian ---End Message--- ---BeginMessage--- On Thu, 2010-07-22 at 10:49 +0200, Sebastian Ewert wrote: Hi, I'm developing an joomla component and my helper an user classes are crowing bigger and bigger. The helper class is for static use only. Does class size decrease performance of my php scripts, even for static usage? Is there a general rule when to split a class to keep performance up? Thanks for reply, Sebastian How big roughly are we talking here? The larger a script or class is, the more memory this uses per instance. Out of the box, PHP doesn't have a way to share the memory space of libraries and classes, so creating massive scripts for a website is not a great idea. The typical approach is to break classes down into blocks such that you need only include per script what you actually need to run that script. For example, having a full class dedicated to user management would need somewhere to create a list of users. Now it doesn't make sense to include this user management class each time you want to create a list of users, so you could split that method off into a different class where it can easily be shared without every script loading in lots of unnecessary code. That's a very simple example, but it can help beforehand if you sketch out exactly what you need to do, and then break it down into logical classes like that. Maybe look at some UML software to help you with this? Thanks, Ash http://www.ashleysheridan.co.uk ---End Message--- ---BeginMessage--- Ashley Sheridan wrote: On Thu, 2010-07-22 at 10:49 +0200, Sebastian Ewert wrote: Hi, I'm developing an joomla component and my helper an user classes are crowing bigger and bigger. The helper class is for static use only. Does class size decrease performance of my php scripts, even for static usage? Is there a general rule when to split a class to keep performance up? Thanks for reply, Sebastian How big roughly are we talking here? The larger a script or class is, the more memory this uses per instance. Out of the box, PHP doesn't have a way to share the memory space of libraries and classes, so creating massive scripts for a website is not a great idea. The user object contains 850 Lines and about 50
php-general Digest 23 Jul 2010 05:28:27 -0000 Issue 6860
php-general Digest 23 Jul 2010 05:28:27 - Issue 6860 Topics (messages 307097 through 307108): session.gc_ : maxlifetime vs probability/divisor : which has higher priority? 307097 by: Keith Re: Does class length slow down performance 307098 by: Jay Blanchard 307099 by: Sebastian Ewert 307100 by: David Harkness Re: PHP database interface layer 307101 by: Marc Guay 307102 by: Floyd Resler 307103 by: Nathan Nobbe 307104 by: Peter Lind 307105 by: Marc Guay 307107 by: Shawn McKenzie SOAP ERROR - Encoding 307106 by: Augusto Flavio opening link in new window 307108 by: David Mehler Administrivia: To subscribe to the digest, e-mail: php-general-digest-subscr...@lists.php.net To unsubscribe from the digest, e-mail: php-general-digest-unsubscr...@lists.php.net To post to the list, e-mail: php-gene...@lists.php.net -- ---BeginMessage--- From what I read, the session will remain even after maxlifetime until the next round session garbage clearance. This is fine for me. 1) However, will the garbage clearance delete the session whose maxlifetime not reach yet? 2) maxlifetime is referrenced to most recent script execution time which has session_start() statement or the first time this session id been created? 3)What does the statement below mean? If different scripts have different values of session.gc_maxlifetime but share the same place for storing the session data then the script with the minimum value will be cleaning the data. Does this mean that each script file called within same session, can have different maxlifetime? I thought each time each script been called for a particular session will overwrite the previous setting if I have I set it with ini_set(). Does the selection of minimum value of the statement above applied to individual session, or refer to all session within the same folder? 4) How to make sure that the PHP session remained as long as user not logout, and if the maxlifetime reach, I can prompt user to decide whether to continue the session or abort it. Thanks for advice. ---End Message--- ---BeginMessage--- [snip] So you think that a length of 850 lines won't lead to a performance problem? No, I don't think there will be problems. I also think the only way you'll ever find out whether it *will* be a problem in your system is by testing. [/snip] ^this to the max [snip] The site is not online yet. I just wanted to know when to split a class and if there are performance problems with to long classes. [/snip] I will try to find some good links for you but there is one book that I can whole-heartedly recommend (I have all of my younger, um, less experienced programmers read it); Head First Object-Oriented Analysis and Design http://oreilly.com/catalog/9780596008673/ It is a quick read, the exercises are fun and even though they focus on Java the principles apply across al OOP languages. As for splitting a class it doesn't matter the size of the class as long as the class does one thing and does it really well. We have some very large classes (remember - you are trying to describe an object and all of the methods for that object) and some very small (under 25 lines including comments) classes. The one characteristic that sticks out is that they all do one thing really well. http://www.wdvl.com/Authoring/Scripting/Tutorial/objects.html (I am starting you a few pages into the article) is a good basic discussion of OOP. ---End Message--- ---BeginMessage--- No, I don't think there will be problems. I also think the only way you'll ever find out whether it *will* be a problem in your system is by testing. I've started some benchmarks with apachebench but the problem is I don't have any benchmarks to compare with. And so I started looking for something to change. I will try to find some good links for you but there is one book that I can whole-heartedly recommend (I have all of my younger, um, less experienced programmers read it); Head First Object-Oriented Analysis and Design http://oreilly.com/catalog/9780596008673/ Thanks to all. My question is answered and I have some lecture for the next week. Greets, Sebastian ---End Message--- ---BeginMessage--- On Thu, Jul 22, 2010 at 2:40 AM, Ashley Sheridan a...@ashleysheridan.co.ukwrote: The larger a script or class is, the more memory this uses per instance. This is not quite true. When the script is loaded, it requires a fixed amount of memory to parse it. The larger it is, the more memory it requires. Next, the script itself is executed, running any top-level code (not in a class or global function). If that includes any require/include statements, those scripts are loaded (if necessary). If it creates objects, that takes more memory. However, the size of each instance of the class is affected only by
Re: [PHP] XML DOM
On 21 Jul 2010, at 19:32, Ben Miller wrote: Problem: If street2 (or any other field) has no value, PHP is outputting the XML node as street2 /, which is producing a JS error when I try to call: script type=text/javascript.. street2 = x[i].getElementsByTagName(street2)[0].childNodes[0].nodeValue; .../script (Because the requested node has no .nodeValue, I'm assuming???) Question: Can I tell PHP to output the XML node as street2/street2 instead of street2 / so that JS sees that the object has a value, but the value is (blank)? street2foo/street2 is syntax that means a street2 element with one child node: text node foo. street2/street2 and street2 / are different syntax that mean the same thing: a street2 element with no child nodes. Your JS property lookup fails because the street2 element has no child nodes. Rather than changing your XML serialization to have some sort of opaque meaning, why not do one of the following in your JS? 1. Test to see if the element in question has any child nodes before attempting to access the first one: if (x[i].getElementsByTagName(street2)[0].childNodes.length 0) ... 2. Use the textContent and innerText properties to get the text of all/any child nodes. -- Benjamin Hawkes-Lewis -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
[PHP] Does class length slow down performance
Hi, I'm developing an joomla component and my helper an user classes are crowing bigger and bigger. The helper class is for static use only. Does class size decrease performance of my php scripts, even for static usage? Is there a general rule when to split a class to keep performance up? Thanks for reply, Sebastian -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Does class length slow down performance
On Thu, 2010-07-22 at 10:49 +0200, Sebastian Ewert wrote: Hi, I'm developing an joomla component and my helper an user classes are crowing bigger and bigger. The helper class is for static use only. Does class size decrease performance of my php scripts, even for static usage? Is there a general rule when to split a class to keep performance up? Thanks for reply, Sebastian How big roughly are we talking here? The larger a script or class is, the more memory this uses per instance. Out of the box, PHP doesn't have a way to share the memory space of libraries and classes, so creating massive scripts for a website is not a great idea. The typical approach is to break classes down into blocks such that you need only include per script what you actually need to run that script. For example, having a full class dedicated to user management would need somewhere to create a list of users. Now it doesn't make sense to include this user management class each time you want to create a list of users, so you could split that method off into a different class where it can easily be shared without every script loading in lots of unnecessary code. That's a very simple example, but it can help beforehand if you sketch out exactly what you need to do, and then break it down into logical classes like that. Maybe look at some UML software to help you with this? Thanks, Ash http://www.ashleysheridan.co.uk
RE: [PHP] Question about SQL and Graph nodel trees
-Original Message- From: Tim Gallagher [mailto:tgallag...@danati.com] Sent: Wednesday, July 21, 2010 12:49 PM To: Andrew Ballard Cc: php-general@lists.php.net Subject: RE: [PHP] Question about SQL and Graph nodel trees Thank you for the informaiton. I did see that code but it looks like it is formatted for MSSQL and was unable to get it to work for Mysql. Tim @Tim, You'll have to migrate the stored procedures (SP) from MSSQL to MySQL (aka stored programs). Each DBMS have their own way of implementing the SP. http://dev.mysql.com/doc/refman/5.1/en/stored-programs-views.html @Andrew, interesting link! Thanks! Regards, Tommy From: Andrew Ballard [aball...@gmail.com] Sent: Wednesday, July 21, 2010 11:40 AM To: Tim Gallagher Cc: php-general@lists.php.net Subject: Re: [PHP] Question about SQL and Graph nodel trees On Wed, Jul 21, 2010 at 11:04 AM, Tim Gallagher tgallag...@danati.com wrote: I cannot be the only one that is having this problem, what are you using for DAG (Direct Acrylic Graph)? I need to have a mesh node edge graph and am having trouble with this? I see that Neo4j has a rest server and I can do this in Java but I want to do it in PHP with a MYSQL or postgresql. If you are doing something like this, can you please tell me how you are doing this. I can do a relationship with a parent child or a nested tree, but I need to do a DAG. Thanks for the help, timgerr A basic approach would be to use two tables - one to store the nodes and second table to store the edges between the nodes. As far as traversing the graph, the best approach I have seen expands this a bit to store the full transitive closure of the graph, rather than just the direct edges: http://www.codeproject.com/KB/database/Modeling_DAGs_on_SQL_DBs.a spx It is written for SQL Server, but the idea works OK (and I successfully tested it once) in MySQL. (I imagine the same would be true for PostgreSQL.) The idea is to store the transitive closure (every possible path) of the entire graph. For instance, if you have a basic graph A - B - C - D it stores these paths: A - B B - C C - D A - C B - D A - D The obvious downside is that edge table can get incredibly large depending on the nature of the graph you are modeling. (The article provides much more detail.) I did, however, import a good chunk of an Active Directory tree (just users and groups, not the full list of attributes) into this pattern just to test the concept, and I found that in that case the size of the transitive closure table did not get out of hand. Andrew -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Does class length slow down performance
Ashley Sheridan wrote: On Thu, 2010-07-22 at 10:49 +0200, Sebastian Ewert wrote: Hi, I'm developing an joomla component and my helper an user classes are crowing bigger and bigger. The helper class is for static use only. Does class size decrease performance of my php scripts, even for static usage? Is there a general rule when to split a class to keep performance up? Thanks for reply, Sebastian How big roughly are we talking here? The larger a script or class is, the more memory this uses per instance. Out of the box, PHP doesn't have a way to share the memory space of libraries and classes, so creating massive scripts for a website is not a great idea. The user object contains 850 Lines and about 50 functions. It also implements 2 table-objects (DB Tables). The helper class contains 500 Lines. The typical approach is to break classes down into blocks such that you need only include per script what you actually need to run that script. For example, having a full class dedicated to user management would need somewhere to create a list of users. Now it doesn't make sense to include this user management class each time you want to create a list of users, so you could split that method off into a different class where it can easily be shared without every script loading in lots of unnecessary code. Thats exacty the point. In my user class I have functions whitch return object-lists of diffrent users or strings with html-form elements for managing this user account. But if I put all these in a helper class I would anyway need to implement the user object there, because of the other getter functions (getUserName etc.) and the table-objects. I always thought this would be less effective, because I have more instances of objects. Thanks, Sebastian -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
RE: [PHP] Does class length slow down performance
[snip] Thats exacty the point. In my user class I have functions whitch return object-lists of diffrent users or strings with html-form elements for managing this user account. But if I put all these in a helper class I would anyway need to implement the user object there, because of the other getter functions (getUserName etc.) and the table-objects. I always thought this would be less effective, because I have more instances of objects. [/snip] Sounds like a major refactoring is in order, how reusable is your class? There is not enough room in this e-mail to cover the basic and intermediate practices of OO design but it sounds like you may need to re-think your design. Does this class do one thing and only one thing? Does it do it really well? Just from what I am reading I see that we have a user class (getUserName) and that class returns lists of users? It sounds as if to me that the user class talks not only about a single user, but perhaps all of the users (object lists of different users). On the surface that sounds like to classes to me, a user class and a class to manipulate said users. -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Does class length slow down performance
Jay Blanchard wrote: [snip] Thats exacty the point. In my user class I have functions whitch return object-lists of diffrent users or strings with html-form elements for managing this user account. But if I put all these in a helper class I would anyway need to implement the user object there, because of the other getter functions (getUserName etc.) and the table-objects. I always thought this would be less effective, because I have more instances of objects. [/snip] Sounds like a major refactoring is in order, how reusable is your class? There is not enough room in this e-mail to cover the basic and intermediate practices of OO design but it sounds like you may need to re-think your design. Does this class do one thing and only one thing? Does it do it really well? Thanks for your advice. I know that I have to go much deeper into programm design. I would appreciate if you could send me some links with practial examples. I've only read some theoretical and very general stuff about it and cannot link everything to the real world. Just from what I am reading I see that we have a user class (getUserName) and that class returns lists of users? It sounds as if to me that the user class talks not only about a single user, but perhaps all of the users (object lists of different users). That was just to generalize things. My user class only returns informations for one user. These informations are values of db-fields or generated html strings. But other classes like my message class have functions that return lists of instances of their own class. From what you've written I think its better to extract these functions into helper classes. But if you want to get all messages that refer to one specific msg its better to leave that function in the message class, isn't it? Or if you want to get a list with all friends of a specific user?(friends are not implemented yet) On the surface that sounds like to classes to me, a user class and a class to manipulate said users. But back to my first Problem: Is a class with 850 lines to long? If it is should I take all the html genarating functions and put them in a helper class? If I do so and there is no way to call those functions without initalizing the main user object, will there still be an increase of performance? Thanks, Sebastian -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
[PHP] PHP database interface layer
Hi everyone, I've built a fairly large normalized database schema for a project. This is fun for me as I like thinking about how everything is interconnected. Foreign keys are all set up, many-to-many tables are go, etc, and so on. But now it's time to create an interface between that database and the website using PHP. I've searched the web and this is obviously a very common problem with many solutions, but I can't help but feel that all of the logic I've built into the database is worth nothing once I start coding. I found this article/presentation that essentially sums up my frustration: http://mag-sol.com/talks/lpm/2006/orm/. Up until now I've been working on smaller projects with only a few tables that don't really relate to each other, and have found this tool (http://www.ricocheting.com/code/php/mysql-database-class-wrapper) very handy for the reasons he explains, but I'm looking for something a little different. I've looked at RedBean and it seems pretty handy, but it also requires me to redefine all of the foreign keys I've already defined, which is annoying. Any hope of something like // Get company where name='Widgets Inc.' or id=1 or $company = $db-get_company(name='Widgets Inc.'); // Get all clients joined to the company $clients = $company-get_clients(); // Get all projects joined to the client $projects = $clients-get_projects(); ? -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Does class length slow down performance
On 22 July 2010 15:27, Sebastian Ewert seb2...@yahoo.de wrote: Jay Blanchard wrote: [snip] Thats exacty the point. In my user class I have functions whitch return object-lists of diffrent users or strings with html-form elements for managing this user account. But if I put all these in a helper class I would anyway need to implement the user object there, because of the other getter functions (getUserName etc.) and the table-objects. I always thought this would be less effective, because I have more instances of objects. [/snip] Sounds like a major refactoring is in order, how reusable is your class? There is not enough room in this e-mail to cover the basic and intermediate practices of OO design but it sounds like you may need to re-think your design. Does this class do one thing and only one thing? Does it do it really well? Thanks for your advice. I know that I have to go much deeper into programm design. I would appreciate if you could send me some links with practial examples. I've only read some theoretical and very general stuff about it and cannot link everything to the real world. Just from what I am reading I see that we have a user class (getUserName) and that class returns lists of users? It sounds as if to me that the user class talks not only about a single user, but perhaps all of the users (object lists of different users). That was just to generalize things. My user class only returns informations for one user. These informations are values of db-fields or generated html strings. But other classes like my message class have functions that return lists of instances of their own class. From what you've written I think its better to extract these functions into helper classes. But if you want to get all messages that refer to one specific msg its better to leave that function in the message class, isn't it? Or if you want to get a list with all friends of a specific user?(friends are not implemented yet) On the surface that sounds like to classes to me, a user class and a class to manipulate said users. But back to my first Problem: Is a class with 850 lines to long? If it is should I take all the html genarating functions and put them in a helper class? If I do so and there is no way to call those functions without initalizing the main user object, will there still be an increase of performance? It's unlikely to cause you performance problems unless you've got a huge amount of traffic - and then you could probably fix your problems easier than refactoring classes. Personal anecdote: I've worked on classes longer than 3K lines with no marked performance problem. That doesn't mean I recommend it, though: bigger classes are a pain to maintain as you loose overview of what's in the class. Regards Peter -- hype WWW: http://plphp.dk / http://plind.dk LinkedIn: http://www.linkedin.com/in/plind BeWelcome/Couchsurfing: Fake51 Twitter: http://twitter.com/kafe15 /hype -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] PHP database interface layer
On 22 July 2010 15:35, Marc Guay marc.g...@gmail.com wrote: Hi everyone, I've built a fairly large normalized database schema for a project. This is fun for me as I like thinking about how everything is interconnected. Foreign keys are all set up, many-to-many tables are go, etc, and so on. But now it's time to create an interface between that database and the website using PHP. I've searched the web and this is obviously a very common problem with many solutions, but I can't help but feel that all of the logic I've built into the database is worth nothing once I start coding. I found this article/presentation that essentially sums up my frustration: http://mag-sol.com/talks/lpm/2006/orm/. Up until now I've been working on smaller projects with only a few tables that don't really relate to each other, and have found this tool (http://www.ricocheting.com/code/php/mysql-database-class-wrapper) very handy for the reasons he explains, but I'm looking for something a little different. I've looked at RedBean and it seems pretty handy, but it also requires me to redefine all of the foreign keys I've already defined, which is annoying. Any hope of something like // Get company where name='Widgets Inc.' or id=1 or $company = $db-get_company(name='Widgets Inc.'); // Get all clients joined to the company $clients = $company-get_clients(); // Get all projects joined to the client $projects = $clients-get_projects(); ? Have you looked at things like Doctrine2? Regards Peter -- hype WWW: http://plphp.dk / http://plind.dk LinkedIn: http://www.linkedin.com/in/plind BeWelcome/Couchsurfing: Fake51 Twitter: http://twitter.com/kafe15 /hype -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Does class length slow down performance
Peter Lind wrote: It's unlikely to cause you performance problems unless you've got a huge amount of traffic - and then you could probably fix your problems easier than refactoring classes. Personal anecdote: I've worked on classes longer than 3K lines with no marked performance problem. That doesn't mean I recommend it, though: bigger classes are a pain to maintain as you loose overview of what's in the class. Regards Peter So you think that a length of 850 lines won't lead to a performance problem? The site is not online yet. I just wanted to know when to split a class and if there are performance problems with to long classes. Thanks, Sebastian -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Does class length slow down performance
On 22 July 2010 15:49, Sebastian Ewert seb2...@yahoo.de wrote: Peter Lind wrote: It's unlikely to cause you performance problems unless you've got a huge amount of traffic - and then you could probably fix your problems easier than refactoring classes. Personal anecdote: I've worked on classes longer than 3K lines with no marked performance problem. That doesn't mean I recommend it, though: bigger classes are a pain to maintain as you loose overview of what's in the class. Regards Peter So you think that a length of 850 lines won't lead to a performance problem? The site is not online yet. I just wanted to know when to split a class and if there are performance problems with to long classes. No, I don't think there will be problems. I also think the only way you'll ever find out whether it *will* be a problem in your system is by testing. Regards Peter -- hype WWW: http://plphp.dk / http://plind.dk LinkedIn: http://www.linkedin.com/in/plind BeWelcome/Couchsurfing: Fake51 Twitter: http://twitter.com/kafe15 /hype -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
[PHP] Video lessons
Hello Im thing that I'm little layse, Do you somebody know PHP VIDEO LESSONS? Thanks a lot. -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] PHP database interface layer
On Thu, Jul 22, 2010 at 7:35 AM, Marc Guay marc.g...@gmail.com wrote: Hi everyone, I've built a fairly large normalized database schema for a project. This is fun for me as I like thinking about how everything is interconnected. Foreign keys are all set up, many-to-many tables are go, etc, and so on. But now it's time to create an interface between that database and the website using PHP. I've searched the web and this is obviously a very common problem with many solutions, but I can't help but feel that all of the logic I've built into the database is worth nothing once I start coding. I found this article/presentation that essentially sums up my frustration: http://mag-sol.com/talks/lpm/2006/orm/. Up until now I've been working on smaller projects with only a few tables that don't really relate to each other, and have found this tool (http://www.ricocheting.com/code/php/mysql-database-class-wrapper) very handy for the reasons he explains, but I'm looking for something a little different. I've looked at RedBean and it seems pretty handy, but it also requires me to redefine all of the foreign keys I've already defined, which is annoying. Any hope of something like // Get company where name='Widgets Inc.' or id=1 or $company = $db-get_company(name='Widgets Inc.'); // Get all clients joined to the company $clients = $company-get_clients(); // Get all projects joined to the client $projects = $clients-get_projects(); ? i recommend propel http://www.propelorm.org/ -nathan
Re: [PHP] PHP database interface layer
i recommend propel http://www.propelorm.org/ This looks hopeful. I'd checked it out before but for some reason lumped it in with all of the other half-baked tools that didn't do what I wanted, but even that basic example seems to cover most of what I want. Thanks for the suggestions. Marc -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
[PHP] session.gc_ : maxlifetime vs probability/divisor : which has higher priority?
From what I read, the session will remain even after maxlifetime until the next round session garbage clearance. This is fine for me. 1) However, will the garbage clearance delete the session whose maxlifetime not reach yet? 2) maxlifetime is referrenced to most recent script execution time which has session_start() statement or the first time this session id been created? 3)What does the statement below mean? If different scripts have different values of session.gc_maxlifetime but share the same place for storing the session data then the script with the minimum value will be cleaning the data. Does this mean that each script file called within same session, can have different maxlifetime? I thought each time each script been called for a particular session will overwrite the previous setting if I have I set it with ini_set(). Does the selection of minimum value of the statement above applied to individual session, or refer to all session within the same folder? 4) How to make sure that the PHP session remained as long as user not logout, and if the maxlifetime reach, I can prompt user to decide whether to continue the session or abort it. Thanks for advice. -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
RE: [PHP] Does class length slow down performance
[snip] So you think that a length of 850 lines won't lead to a performance problem? No, I don't think there will be problems. I also think the only way you'll ever find out whether it *will* be a problem in your system is by testing. [/snip] ^this to the max [snip] The site is not online yet. I just wanted to know when to split a class and if there are performance problems with to long classes. [/snip] I will try to find some good links for you but there is one book that I can whole-heartedly recommend (I have all of my younger, um, less experienced programmers read it); Head First Object-Oriented Analysis and Design http://oreilly.com/catalog/9780596008673/ It is a quick read, the exercises are fun and even though they focus on Java the principles apply across al OOP languages. As for splitting a class it doesn't matter the size of the class as long as the class does one thing and does it really well. We have some very large classes (remember - you are trying to describe an object and all of the methods for that object) and some very small (under 25 lines including comments) classes. The one characteristic that sticks out is that they all do one thing really well. http://www.wdvl.com/Authoring/Scripting/Tutorial/objects.html (I am starting you a few pages into the article) is a good basic discussion of OOP. -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Does class length slow down performance
No, I don't think there will be problems. I also think the only way you'll ever find out whether it *will* be a problem in your system is by testing. I've started some benchmarks with apachebench but the problem is I don't have any benchmarks to compare with. And so I started looking for something to change. I will try to find some good links for you but there is one book that I can whole-heartedly recommend (I have all of my younger, um, less experienced programmers read it); Head First Object-Oriented Analysis and Design http://oreilly.com/catalog/9780596008673/ Thanks to all. My question is answered and I have some lecture for the next week. Greets, Sebastian -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Does class length slow down performance
On Thu, Jul 22, 2010 at 2:40 AM, Ashley Sheridan a...@ashleysheridan.co.ukwrote: The larger a script or class is, the more memory this uses per instance. This is not quite true. When the script is loaded, it requires a fixed amount of memory to parse it. The larger it is, the more memory it requires. Next, the script itself is executed, running any top-level code (not in a class or global function). If that includes any require/include statements, those scripts are loaded (if necessary). If it creates objects, that takes more memory. However, the size of each instance of the class is affected only by the data it stores--not the number or length of its methods. PHP creates a single internal Class object to contain the methods, and this indeed takes memory proportional to the number of methods, but this doesn't affect the instances. Each instance stores only its instance properties such as $this-firstName. This correction aside, the advice here is spot on: split your classes based on responsibilities. The reason for this has more to do with ease of development than performance. Say you have one monster class filled with static methods. If your application uses most of those methods for each request, splitting it will have no performance benefit because both scripts will end up being loaded anyway. But if you can group the methods into logical subsystems, they will be easier to understand and work with. Peace, David
Re: [PHP] PHP database interface layer
i recommend propel http://www.propelorm.org/ Holy Moses that thing is a monster. It requires installing extra libraries (Phing) in order to create an XML schema reverse-engineered from my existing database. The code looks simple enough but that installation is brutal. Any other suggestions? I'm thinking of sticking with good ol' hand coding and a few helper classes. Marc -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] PHP database interface layer
On Jul 22, 2010, at 3:14 PM, Marc Guay wrote: i recommend propel http://www.propelorm.org/ Holy Moses that thing is a monster. It requires installing extra libraries (Phing) in order to create an XML schema reverse-engineered from my existing database. The code looks simple enough but that installation is brutal. Any other suggestions? I'm thinking of sticking with good ol' hand coding and a few helper classes. Marc I kind of had the same reaction when I saw it! I started playing around with it and realized that if I ever make any database changes I'm going to have to regenerate everything! Seems a bit cumbersome to me but I'm an good ol' hand coding and a few helper classes programmer myself! I wound up creating a very light-weight yet flexible framework that has served me well over the past few years. I've been thinking about releasing it but it doesn't follow the traditional model of most of the MVC frameworks I've seen. Take care, Floyd -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] PHP database interface layer
On Thu, Jul 22, 2010 at 1:14 PM, Marc Guay marc.g...@gmail.com wrote: i recommend propel http://www.propelorm.org/ Holy Moses that thing is a monster. It requires installing extra libraries (Phing) in order to create an XML schema reverse-engineered from my existing database. The code looks simple enough but that installation is brutal. Any other suggestions? I'm thinking of sticking with good ol' hand coding and a few helper classes. Marc so you spend a little time up front to sav tons of coding time in the future... change your schema; re-generate the base layer.., o yeah, and it preserves custom logic too (upon regeneration), since that resides in sub classes. i used to hand write db wrapper classes but found it tedious and tended to result in a lack of cohesion through the classes themselves, not to mention being error prone. -nathan
Re: [PHP] PHP database interface layer
On 22 July 2010 21:14, Marc Guay marc.g...@gmail.com wrote: i recommend propel http://www.propelorm.org/ Holy Moses that thing is a monster. It requires installing extra libraries (Phing) in order to create an XML schema reverse-engineered from my existing database. The code looks simple enough but that installation is brutal. Any other suggestions? I'm thinking of sticking with good ol' hand coding and a few helper classes. Let me repeat myself: did you have a look at Doctrine2? Regards Peter -- hype WWW: http://plphp.dk / http://plind.dk LinkedIn: http://www.linkedin.com/in/plind BeWelcome/Couchsurfing: Fake51 Twitter: http://twitter.com/kafe15 /hype -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] PHP database interface layer
Let me repeat myself: did you have a look at Doctrine2? Hi Peter, I didn't mean to ignore your suggestion, I just got extremely overwealmed by the Doctrine website and didn't even have a response. I get the impression that, like Zend and others, learning how to install and use that would take longer than my 'little' website is worth. Maybe someday when I'm working for a more patient employer who's willing to pay me to learn. Insert laughter here. Marc -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
[PHP] SOAP ERROR - Encoding
Hi guys,
I created a simple wsdl web service. Everything works fine, but when I fill
the fields with accents and send the soap request, the PHP returns me an
error:
*Fatal error*: Uncaught SoapFault exception: [Client] SOAP-ERROR: Encoding:
string 'ol\xe1...' is not a valid utf-8 string in PATH\cilent.php 16 Stack
trace: #0 [internal function]: SoapClient-__call('Send', Array) #1
PATH\cilent.php(16): SoapClient-Send(Array) #2 {main} thrown in *
PATH\cilent.php* on line *16*
I tested this same request using the eclipse web service explorer(It's a
java client web service inside the eclipse IDE) and the response was ok.
I found few topics about this issue on the google. One related solution to
this problem is use the utf8_encode() function. I tried add this function
before to send the soap request but didnt worked.
I think that this problem is in the PHP soap client because using the
eclipse web service explorer it works fine.
Here is my php soap client:
$client = new SoapClient('http://app/webservice.wsdl');
$return = $client-Send(array('token' = '123123', 'message' = array(
'text' = 'This is a string with special characters á é í ó ú', 'dest' =
'John', 'sender' = 'Augusto')));
As I said I tried to use the utf8_encode() here:
$return = $client-Send(array('token' = '123123', 'message' = array(
'text' = utf8_encode('This is a string with special characters á é í ó ú'),
'dest' = 'John', 'sender' = 'Augusto')));
But the problem still.
I tried also add the propertie defencoding in the soap server:
$server-soap_defencoding = 'UTF-8';
But still not working.
What I'm missing?
Thanks
Augusto Morais
[PHP] Re: PHP database interface layer
On 07/22/2010 08:35 AM, Marc Guay wrote: Hi everyone, I've built a fairly large normalized database schema for a project. This is fun for me as I like thinking about how everything is interconnected. Foreign keys are all set up, many-to-many tables are go, etc, and so on. But now it's time to create an interface between that database and the website using PHP. I've searched the web and this is obviously a very common problem with many solutions, but I can't help but feel that all of the logic I've built into the database is worth nothing once I start coding. I found this article/presentation that essentially sums up my frustration: http://mag-sol.com/talks/lpm/2006/orm/. Up until now I've been working on smaller projects with only a few tables that don't really relate to each other, and have found this tool (http://www.ricocheting.com/code/php/mysql-database-class-wrapper) very handy for the reasons he explains, but I'm looking for something a little different. I've looked at RedBean and it seems pretty handy, but it also requires me to redefine all of the foreign keys I've already defined, which is annoying. Any hope of something like // Get company where name='Widgets Inc.' or id=1 or $company = $db-get_company(name='Widgets Inc.'); // Get all clients joined to the company $clients = $company-get_clients(); // Get all projects joined to the client $projects = $clients-get_projects(); ? You may not want a full fledged framework, but I would recommend CakePHP. Now they have naming conventions for tables/columns, that if you follow, makes it sooo easy, but if you already have your schema built it can use that just as easily. Just run the cake script, enter db details, it will enumerate tables and columns and ask which are related by which keys and even let you enter validation rules etc. It then builds a skeleton app with all the models for your schema and will even generate test. -- Thanks! -Shawn http://www.spidean.com -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
[PHP] opening link in new window
Hello, I've got a page with an external link. I'd like to open it in a new window, but i'm using the xhtml 1.0 strict dtd so this isn't possible. I was wondering if php could pull this off? Failing that, and not really wanting to go there, would javascript work for this? Thanks. Dave. -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
