[PHP] actually HTML again; resizeing images
Anyone knows a good reading about how and when images displayd with HTML tags are re-sized ? tnx georg
[PHP] Re: actually HTML again; resizeing images
On 3/17/2013 9:22 AM, georg wrote: Anyone knows a good reading about how and when images displayd with HTML tags are re-sized ? tnx georg not php -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] actually HTML again; resizeing images
On 17 Mar 2013, at 13:22, georg georg.chamb...@telia.com wrote: Anyone knows a good reading about how and when images displayd with HTML tags are re-sized ? Not entirely sure what you mean, but a downloaded image will be resized when it needs to be shown in different dimensions to the actual image, whether that's due to width and height attributes on an img tag, or CSS styles, or whatever. The specific algorithm used (which I'm guessing is what you mean by how is up to the browser and cannot be controlled. -Stuart -- Stuart Dallas 3ft9 Ltd http://3ft9.com/ -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] actually HTML again; resizeing images
On Mar 17, 2013 12:28 PM, Stuart Dallas stu...@3ft9.com wrote: On 17 Mar 2013, at 13:22, georg georg.chamb...@telia.com wrote: Anyone knows a good reading about how and when images displayd with HTML tags are re-sized ? Not entirely sure what you mean, but a downloaded image will be resized when it needs to be shown in different dimensions to the actual image, whether that's due to width and height attributes on an img tag, or CSS styles, or whatever. The specific algorithm used (which I'm guessing is what you mean by how is up to the browser and cannot be controlled. -Stuart -- Stuart Dallas 3ft9 Ltd http://3ft9.com/ -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php Unless you use something like treesaver
Re: [PHP] variable type - conversion/checking
On 16-3-2013 19:20, Matijn Woudt wrote:
On Sat, Mar 16, 2013 at 6:52 PM, Maciek Sokolewicz
maciek.sokolew...@gmail.com wrote:
Hi,
I have tried to find a way to check if a character string is possible to
test whether it is convertible to an intger !
any suggestion ?
BR georg
All responses in this thread have been very nice; but you could also try a
much simpler 2-step check:
1. is_numeric
2. if true check if there's a decimal character in the string:
if(is_numeric($str) false === strpos('.', $str)) {
// it's an int for sure
} else {
// might be a number, but it's definitly not an int
}
Wrong. is_numeric will accept 1e1, which is a float, so you would need to
check for e or E too.
- Matijn
Although in theory I agree, indeed any e* number is treated as a
floating point number. However, considering the exponent and the base
are forced to be integer numbers (due to exclusion of decimal points),
in the real number system, you will *always* end up with a natural
number, i.e. integer. Regardless of your input.
So as a result, the input could always be interpreted as an integer,
without any precision-loss using the method above.
- Tul
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[PHP] modulo function
Guess there should be one in PHP but cant find it (tnx for many earlier answers) Br georg
[PHP] Re: modulo function
On 17-3-2013 22:23, georg wrote: Guess there should be one in PHP but cant find it (tnx for many earlier answers) Br georg You mean the modulus operator? 10%3 = 1 http://www.php.net/manual/en/language.operators.arithmetic.php -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] variable type - conversion/checking
On Sun, Mar 17, 2013 at 10:20 PM, Maciek Sokolewicz
maciek.sokolew...@gmail.com wrote:
On 16-3-2013 19:20, Matijn Woudt wrote:
On Sat, Mar 16, 2013 at 6:52 PM, Maciek Sokolewicz
maciek.sokolew...@gmail.com wrote:
Hi,
I have tried to find a way to check if a character string is possible to
test whether it is convertible to an intger !
any suggestion ?
BR georg
All responses in this thread have been very nice; but you could also try
a
much simpler 2-step check:
1. is_numeric
2. if true check if there's a decimal character in the string:
if(is_numeric($str) false === strpos('.', $str)) {
// it's an int for sure
} else {
// might be a number, but it's definitly not an int
}
Wrong. is_numeric will accept 1e1, which is a float, so you would need to
check for e or E too.
- Matijn
Although in theory I agree, indeed any e* number is treated as a
floating point number. However, considering the exponent and the base are
forced to be integer numbers (due to exclusion of decimal points), in the
real number system, you will *always* end up with a natural number, i.e.
integer. Regardless of your input.
So as a result, the input could always be interpreted as an integer,
without any precision-loss using the method above.
- Tul
Except... that it might not fit in an 32 or 64 bit integer, which would
lead to precision loss.
- Matijn
[PHP] Re: [PHP-DEV] feature request : easy shared memory
On 03/14/2013 01:21 PM, Bob Weinand wrote: Sharing active memory between processes goes against the shared nothing design of PHP. The lack of the feature you're describing is itself a feature. :-) If you had real shared memory, then you're now writing a multi-threaded app. Even if you aren't using threads per se it's the same level of potential for spooky action at a distance. If your problem space really requires that (and there certainly are those that do), Java or NodeJs will suit you better because those are built specifically for a persistent-server model, rather than PHP's shared-nothing design. However, in practice most PHP/web applications don't need that, because HTTP is a stateless request/response system. Shared-nothing more closely models what the actual environment is doing, and can still be very performant as long as you don't do anything naive. If you're doing something stateful like Web Sockets, then you can run PHP as a cli application that is its own persistent server rather than as an Apache add-on. For that, look at Ratchet: http://socketo.me/ --Larry Garfield If PHP should be so restrictive against sharing, why are there extensions like memcached, ...? Someone must have missed this possibility to share rapidly... If I need something like websockets, I use the pthreads extension: perfectly suited for stateful applications. For example: I want to have the database in memory (no, no mysql Memory-tables; this is too slow...) and only do the updates into the database for faster access when most contents are read-only. What are these good reasons against such a feature except it violates the shares-nothing superlative of PHP. (Even if this feature would exist, you can still write PHP without sharing) Bo Weinand Memcache is out of process. There are possible race conditions there, but FAR fewer and FAR more contained than true multi-threaded environments. This list has debated the merits of shared-nothing many times before; it was a deliberate design decision in the interest of simplifying development for the overwhelming majority of users. If your app is so performance sensitive that a memcache lookup is going to bring it to its knees, then either you're misusing PHP or you're better off using something other than PHP. (PHP is not the tool for every use case.) In any event, adding true shared memory to PHP would be nearly impossible without completely redesigning the way it interacts with web servers. The alternative is to write your own PHP CLI application that connects to sockets itself and runs as a daemon (possibly using the pthreads extention as you mention), and cut apache/nginx out of the picture entirely. If your use case calls for that, knock yourself out. But the good reasons against adding such a feature is that it would require rewriting everything and rearchitecting the entire Apache SAPI, which is not happening any time soon. --Larry Garfield -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
