[PHP] a quick question about array keys
a quick question lets say i have an array like that Array ( [300] => 300 [301] => 301 [302] => 302 [303] => 303 [304] => 304 [305] => 305 [306] => 306 [307] => 307 [308] => 308 ... how can i change keys to 0,1,2,3,.. by faster way (it should like that) > Array ( [0] => 300 [1] => 301 [2] => 302 [3] => 303
Re: [PHP] a quick question about array keys
Quickest way I can think of would be to do something like
$tmp = array();
foreach($old_array as $key => $value)
{
$tmp[$value] = $key;
}
But knowing PHP there is probably some array_reverse_keys() function.
Regards,
-Josh
Joshua Kehn | josh.k...@gmail.com
http://joshuakehn.com
On Aug 31, 2010, at 11:43 AM, Tontonq Tontonq wrote:
> a quick question
> lets say i have an array like that
>
>
> Array
> (
> [300] => 300
> [301] => 301
> [302] => 302
> [303] => 303
> [304] => 304
> [305] => 305
> [306] => 306
> [307] => 307
> [308] => 308
> ...
> how can i change keys to 0,1,2,3,.. by faster way
> (it should like that) >
> Array
> (
> [0] => 300
> [1] => 301
> [2] => 302
> [3] => 303
>
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PHP General Mailing List (http://www.php.net/)
To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] a quick question about array keys
On Tue, 2010-08-31 at 18:43 +0300, Tontonq Tontonq wrote:
> a quick question
> lets say i have an array like that
>
>
> Array
> (
> [300] => 300
> [301] => 301
> [302] => 302
> [303] => 303
> [304] => 304
> [305] => 305
> [306] => 306
> [307] => 307
> [308] => 308
> ...
> how can i change keys to 0,1,2,3,.. by faster way
> (it should like that) >
> Array
> (
> [0] => 300
> [1] => 301
> [2] => 302
> [3] => 303
>
There are two ways I see to do it. You can iterate the array and create
a copy, assigning elements dynamic values:
$new_array = array();
foreach($array as $a)
{
$new_array[] = $a;
}
or use a sorting function on it that doesn't preserve the keys (as in
your example all the values in the array were in numerical order.
$new_array = sort($array);
Having said that, if the key isn't important, and it doesn't seem to be
if you want to change it, then why not use a foreach and leave the key
as it is?
Thanks,
Ash
http://www.ashleysheridan.co.uk
Re: [PHP] a quick question about array keys
The fastest way is going to be array_values(): http://www.php.net/array_values --Larry Garfield On 8/31/10 10:43 AM, Tontonq Tontonq wrote: a quick question lets say i have an array like that Array ( [300] => 300 [301] => 301 [302] => 302 [303] => 303 [304] => 304 [305] => 305 [306] => 306 [307] => 307 [308] => 308 ... how can i change keys to 0,1,2,3,.. by faster way (it should like that)> Array ( [0] => 300 [1] => 301 [2] => 302 [3] => 303 -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] a quick question about array keys
On Tue, 2010-08-31 at 11:46 -0400, Joshua Kehn wrote:
> Quickest way I can think of would be to do something like
>
> $tmp = array();
>
> foreach($old_array as $key => $value)
> {
> $tmp[$value] = $key;
> }
>
> But knowing PHP there is probably some array_reverse_keys() function.
>
> Regards,
>
> -Josh
>
> Joshua Kehn | josh.k...@gmail.com
> http://joshuakehn.com
>
> On Aug 31, 2010, at 11:43 AM, Tontonq Tontonq wrote:
>
> > a quick question
> > lets say i have an array like that
> >
> >
> > Array
> > (
> > [300] => 300
> > [301] => 301
> > [302] => 302
> > [303] => 303
> > [304] => 304
> > [305] => 305
> > [306] => 306
> > [307] => 307
> > [308] => 308
> > ...
> > how can i change keys to 0,1,2,3,.. by faster way
> > (it should like that) >
> > Array
> > (
> > [0] => 300
> > [1] => 301
> > [2] => 302
> > [3] => 303
> >
>
>
That doesn't actually answer the question, it just changes the key/value
pairs around. There is a built-in function for this in PHP, but it's not
what the OP asked for.
Thanks,
Ash
http://www.ashleysheridan.co.uk
Re: [PHP] a quick question about array keys
On Aug 31, 2010, at 11:46 AM, Ashley Sheridan wrote:
> On Tue, 2010-08-31 at 11:46 -0400, Joshua Kehn wrote:
>>
>> Quickest way I can think of would be to do something like
>>
>> $tmp = array();
>>
>> foreach($old_array as $key => $value)
>> {
>> $tmp[$value] = $key;
>> }
>>
>> But knowing PHP there is probably some array_reverse_keys() function.
>>
>> Regards,
>>
>> -Josh
>>
>> Joshua Kehn | josh.k...@gmail.com
>> http://joshuakehn.com
>>
>> On Aug 31, 2010, at 11:43 AM, Tontonq Tontonq wrote:
>>
>> > a quick question
>> > lets say i have an array like that
>> >
>> >
>> > Array
>> > (
>> > [300] => 300
>> > [301] => 301
>> > [302] => 302
>> > [303] => 303
>> > [304] => 304
>> > [305] => 305
>> > [306] => 306
>> > [307] => 307
>> > [308] => 308
>> > ...
>> > how can i change keys to 0,1,2,3,.. by faster way
>> > (it should like that) >
>> > Array
>> > (
>> > [0] => 300
>> > [1] => 301
>> > [2] => 302
>> > [3] => 303
>> >
>>
>>
>
> That doesn't actually answer the question, it just changes the key/value
> pairs around. There is a built-in function for this in PHP, but it's not what
> the OP asked for.
>
> Thanks,
> Ash
> http://www.ashleysheridan.co.uk
>
>
I misread the question as flipping array keys, my mistake.
Regards,
-Josh
Joshua Kehn | josh.k...@gmail.com
http://joshuakehn.com
Re: [PHP] a quick question about array keys
On 31 August 2010 16:43, Tontonq Tontonq wrote: > a quick question > lets say i have an array like that > > > Array > ( > [300] => 300 > [301] => 301 > [302] => 302 > [303] => 303 > [304] => 304 > [305] => 305 > [306] => 306 > [307] => 307 > [308] => 308 > ... > how can i change keys to 0,1,2,3,.. by faster way > (it should like that) > > Array > ( > [0] => 300 > [1] => 301 > [2] => 302 > [3] => 303 > > $array = array_values($array); Or, if you don't want to preserve the original array AND you want the data sorted ... sort($array); -- Richard Quadling Twitter : EE : Zend @RQuadling : e-e.com/M_248814.html : bit.ly/9O8vFY -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] a quick question about array keys
Ty four your all replies i got 9 replies less than 10 minutes :) than can u answer this too my array is like that for now Array ( [300] => 300 [301] => 301 [302] => 302 [303] => 303 [304] => 304 [305] => 305 [306] => 306 [307] => 307 [308] => 308 [309] => 309 [310] => 310 [311] => 311 [312] => 312 [313] => 313 [314] => 314 [165] => 165 [166] => 166 [167] => 167 [168] => 168 [169] => 169 [170] => 170 [171] => 171 [172] => 172 [173] => 173 [201] => 201 [202] => 202 [203] => 203 [204] => 204 [205] => 205 [206] => 206 [207] => 207 [208] => 208 [209] => 209 [210] => 210 [211] => 211 [212] => 212 [213] => 213 [214] => 214 [215] => 215 [315] => 315 how can i make an array that will store values like Array ( [0] => 300-314 [1] => 165-173 ) i hope if u did understand me :D 2010/8/31 la...@garfieldtech.com > The fastest way is going to be array_values(): > > http://www.php.net/array_values > > --Larry Garfield > > > On 8/31/10 10:43 AM, Tontonq Tontonq wrote: > >> a quick question >> lets say i have an array like that >> >> >> Array >> ( >> [300] => 300 >> [301] => 301 >> [302] => 302 >> [303] => 303 >> [304] => 304 >> [305] => 305 >> [306] => 306 >> [307] => 307 >> [308] => 308 >> ... >> how can i change keys to 0,1,2,3,.. by faster way >> (it should like that)> >> Array >> ( >> [0] => 300 >> [1] => 301 >> [2] => 302 >> [3] => 303 >> >> >> > -- > PHP General Mailing List (http://www.php.net/) > To unsubscribe, visit: http://www.php.net/unsub.php > >
Re: [PHP] a quick question about array keys
On Tue, 2010-08-31 at 19:06 +0300, Tontonq Tontonq wrote:
> Ty four your all replies i got 9 replies less than 10 minutes :)
>
> than can u answer this too
> my array is like that for now
> Array
> (
> [300] => 300
> [301] => 301
> [302] => 302
> [303] => 303
> [304] => 304
> [305] => 305
> [306] => 306
> [307] => 307
> [308] => 308
> [309] => 309
> [310] => 310
> [311] => 311
> [312] => 312
> [313] => 313
> [314] => 314
> [165] => 165
> [166] => 166
> [167] => 167
> [168] => 168
> [169] => 169
> [170] => 170
> [171] => 171
> [172] => 172
> [173] => 173
> [201] => 201
> [202] => 202
> [203] => 203
> [204] => 204
> [205] => 205
> [206] => 206
> [207] => 207
> [208] => 208
> [209] => 209
> [210] => 210
> [211] => 211
> [212] => 212
> [213] => 213
> [214] => 214
> [215] => 215
> [315] => 315
>
> how can i make an array
> that will store values like
> Array
> (
> [0] => 300-314
> [1] => 165-173
> )
>
> i hope if u did understand me :D
>
> 2010/8/31 la...@garfieldtech.com
>
> > The fastest way is going to be array_values():
> >
> > http://www.php.net/array_values
> >
> > --Larry Garfield
> >
> >
> > On 8/31/10 10:43 AM, Tontonq Tontonq wrote:
> >
> >> a quick question
> >> lets say i have an array like that
> >>
> >>
> >> Array
> >> (
> >> [300] => 300
> >> [301] => 301
> >> [302] => 302
> >> [303] => 303
> >> [304] => 304
> >> [305] => 305
> >> [306] => 306
> >> [307] => 307
> >> [308] => 308
> >> ...
> >> how can i change keys to 0,1,2,3,.. by faster way
> >> (it should like that)>
> >> Array
> >> (
> >> [0] => 300
> >> [1] => 301
> >> [2] => 302
> >> [3] => 303
> >>
> >>
> >>
> > --
> > PHP General Mailing List (http://www.php.net/)
> > To unsubscribe, visit: http://www.php.net/unsub.php
> >
> >
I'd use a loop for something like that:
$new_array = array('0-300'=>0, '301-400'=>0, '401-500'=>0, '501+'=>0);
foreach($old_array as $a)
{
switch(true)
{
case $a <= 300:
{
$new_array['0-300']++;
break;
}
case $a <= 400:
{
$new_array['301-400']++;
break;
}
case $a <= 500:
{
$new_array['401-500']++;
break;
}
default:
{
$new_array['501+']++;
break;
}
}
}
Thanks,
Ash
http://www.ashleysheridan.co.uk
Re: [PHP] a quick question about array keys
On 31 August 2010 16:45, Ashley Sheridan wrote:
> There are two ways I see to do it. You can iterate the array and create
> a copy, assigning elements dynamic values:
>
> $new_array = array();
> foreach($array as $a)
> {
> $new_array[] = $a;
> }
>
> or use a sorting function on it that doesn't preserve the keys (as in
> your example all the values in the array were in numerical order.
>
> $new_array = sort($array);
sort() operates in the array. It does not return a new array, just a
bool to indicate success or not.
http://docs.php.net/sort
--
Richard Quadling
Twitter : EE : Zend
@RQuadling : e-e.com/M_248814.html : bit.ly/9O8vFY
--
PHP General Mailing List (http://www.php.net/)
To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] a quick question about array keys
Have a look at the manual, especially the function "array_values()". /frank Skickat från min iPhone. 31 aug 2010 kl. 17:43 skrev Tontonq Tontonq : > a quick question > lets say i have an array like that > > > Array > ( > [300] => 300 > [301] => 301 > [302] => 302 > [303] => 303 > [304] => 304 > [305] => 305 > [306] => 306 > [307] => 307 > [308] => 308 > ... > how can i change keys to 0,1,2,3,.. by faster way > (it should like that) > > Array > ( > [0] => 300 > [1] => 301 > [2] => 302 > [3] => 303 > -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] a quick question about array keys
On Tue, 2010-08-31 at 19:06 +0300, Tontonq Tontonq wrote: > Ty four your all replies i got 9 replies less than 10 minutes :) > > than can u answer this too > my array is like that for now > Array > ( > [300] => 300 > [301] => 301 > [302] => 302 > [303] => 303 > [304] => 304 > [305] => 305 > [306] => 306 > [307] => 307 > [308] => 308 > [309] => 309 > [310] => 310 > [311] => 311 > [312] => 312 > [313] => 313 > [314] => 314 > [165] => 165 > [166] => 166 > [167] => 167 > [168] => 168 > [169] => 169 > [170] => 170 > [171] => 171 > [172] => 172 > [173] => 173 > [201] => 201 > [202] => 202 > [203] => 203 > [204] => 204 > [205] => 205 > [206] => 206 > [207] => 207 > [208] => 208 > [209] => 209 > [210] => 210 > [211] => 211 > [212] => 212 > [213] => 213 > [214] => 214 > [215] => 215 > [315] => 315 > > how can i make an array > that will store values like > Array > ( > [0] => 300-314 > [1] => 165-173 > ) > > i hope if u did understand me :D > > 2010/8/31 la...@garfieldtech.com > > > The fastest way is going to be array_values(): > > > > http://www.php.net/array_values > > > > --Larry Garfield > > > > > > On 8/31/10 10:43 AM, Tontonq Tontonq wrote: > > > >> a quick question > >> lets say i have an array like that > >> > >> > >> Array > >> ( > >> [300] => 300 > >> [301] => 301 > >> [302] => 302 > >> [303] => 303 > >> [304] => 304 > >> [305] => 305 > >> [306] => 306 > >> [307] => 307 > >> [308] => 308 > >> ... > >> how can i change keys to 0,1,2,3,.. by faster way > >> (it should like that)> > >> Array > >> ( > >> [0] => 300 > >> [1] => 301 > >> [2] => 302 > >> [3] => 303 > >> > >> > >> > > -- > > PHP General Mailing List (http://www.php.net/) > > To unsubscribe, visit: http://www.php.net/unsub.php > > > > Oops, I slightly mis-read the question there in my last post. I'm not actually sure what it is you *are* after though. Thanks, Ash http://www.ashleysheridan.co.uk
Re: [PHP] a quick question about array keys
On Tue, 2010-08-31 at 16:58 +0100, Richard Quadling wrote:
> On 31 August 2010 16:45, Ashley Sheridan wrote:
> > There are two ways I see to do it. You can iterate the array and create
> > a copy, assigning elements dynamic values:
> >
> > $new_array = array();
> > foreach($array as $a)
> > {
> >$new_array[] = $a;
> > }
> >
> > or use a sorting function on it that doesn't preserve the keys (as in
> > your example all the values in the array were in numerical order.
> >
> > $new_array = sort($array);
>
> sort() operates in the array. It does not return a new array, just a
> bool to indicate success or not.
>
> http://docs.php.net/sort
>
>
>
Ah, my bad!
Thanks,
Ash
http://www.ashleysheridan.co.uk
Re: [PHP] a quick question about array keys
On 31 August 2010 17:06, Tontonq Tontonq wrote:
> Array
> (
> [300] => 300
> [301] => 301
> [302] => 302
> [303] => 303
> [304] => 304
> [305] => 305
> [306] => 306
> [307] => 307
> [308] => 308
> [309] => 309
> [310] => 310
> [311] => 311
> [312] => 312
> [313] => 313
> [314] => 314
> [165] => 165
> [166] => 166
> [167] => 167
> [168] => 168
> [169] => 169
> [170] => 170
> [171] => 171
> [172] => 172
> [173] => 173
> [201] => 201
> [202] => 202
> [203] => 203
> [204] => 204
> [205] => 205
> [206] => 206
> [207] => 207
> [208] => 208
> [209] => 209
> [210] => 210
> [211] => 211
> [212] => 212
> [213] => 213
> [214] => 214
> [215] => 215
> [315] => 315
$newData = array();
$firstValue = null;
$lastValue = null;
foreach($data as $value)
{
// New first value.
if (is_null($firstValue))
{
$firstValue = $value;
$lastValue = null;
}
// New last value and is the same or 1 more.
if (is_null($lastValue))
{
$lastValue = $value;
}
// Is the value this or the next value from $lastValue
else if($value == $lastValue || $value == 1 + $lastValue)
{
$lastValue = $value;
}
// We have a break;
else
{
$newData[] = "$firstValue-$lastValue";
$firstValue = $lastValue = null;
}
}
--
Richard Quadling
Twitter : EE : Zend
@RQuadling : e-e.com/M_248814.html : bit.ly/9O8vFY
--
PHP General Mailing List (http://www.php.net/)
To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] a quick question about array keys
i think its my mistake it will begin from first value of array it will continue until if its more big than +2 and it 2010/8/31 Ashley Sheridan > On Tue, 2010-08-31 at 19:06 +0300, Tontonq Tontonq wrote: > > Ty four your all replies i got 9 replies less than 10 minutes :) > > than can u answer this too > my array is like that for now > Array > ( > [300] => 300 > [301] => 301 > [302] => 302 > [303] => 303 > [304] => 304 > [305] => 305 > [306] => 306 > [307] => 307 > [308] => 308 > [309] => 309 > [310] => 310 > [311] => 311 > [312] => 312 > [313] => 313 > [314] => 314 > [165] => 165 > [166] => 166 > [167] => 167 > [168] => 168 > [169] => 169 > [170] => 170 > [171] => 171 > [172] => 172 > [173] => 173 > [201] => 201 > [202] => 202 > [203] => 203 > [204] => 204 > [205] => 205 > [206] => 206 > [207] => 207 > [208] => 208 > [209] => 209 > [210] => 210 > [211] => 211 > [212] => 212 > [213] => 213 > [214] => 214 > [215] => 215 > [315] => 315 > > how can i make an array > that will store values like > Array > ( > [0] => 300-314 > [1] => 165-173 > ) > > i hope if u did understand me :D > > 2010/8/31 la...@garfieldtech.com > > > The fastest way is going to be array_values(): > > > > http://www.php.net/array_values > > > > --Larry Garfield > > > > > > On 8/31/10 10:43 AM, Tontonq Tontonq wrote: > > > >> a quick question > >> lets say i have an array like that > >> > >> > >> Array > >> ( > >> [300] => 300 > >> [301] => 301 > >> [302] => 302 > >> [303] => 303 > >> [304] => 304 > >> [305] => 305 > >> [306] => 306 > >> [307] => 307 > >> [308] => 308 > >> ... > >> how can i change keys to 0,1,2,3,.. by faster way > >> (it should like that)> > >> Array > >> ( > >> [0] => 300 > >> [1] => 301 > >> [2] => 302 > >> [3] => 303 > >> > >> > >> > > -- > > PHP General Mailing List (http://www.php.net/) > > To unsubscribe, visit: http://www.php.net/unsub.php > > > > > > > Oops, I slightly mis-read the question there in my last post. I'm not > actually sure what it is you *are* after though. > > > Thanks, > Ash > http://www.ashleysheridan.co.uk > > >
Re: [PHP] a quick question about array keys
On 31 August 2010 17:39, Richard Quadling wrote:
> On 31 August 2010 17:06, Tontonq Tontonq wrote:
>> Array
>> (
>> [300] => 300
>> [301] => 301
>> ...
Not sure what happened there!
300,
301 => 301,
302 => 302,
303 => 303,
304 => 304,
305 => 305,
306 => 306,
307 => 307,
308 => 308,
309 => 309,
310 => 310,
311 => 311,
312 => 312,
313 => 313,
314 => 314,
165 => 165,
166 => 166,
167 => 167,
168 => 168,
169 => 169,
170 => 170,
171 => 171,
172 => 172,
173 => 173,
201 => 201,
202 => 202,
203 => 203,
204 => 204,
205 => 205,
206 => 206,
207 => 207,
208 => 208,
209 => 209,
210 => 210,
211 => 211,
212 => 212,
213 => 213,
214 => 214,
215 => 215,
101 => 101,
315 => 315,
316 => 316,
987 => 987,
);
$newData = array();
$firstValue = null;
$lastValue = null;
foreach($data as $value)
{
// New first value.
if (is_null($firstValue))
{
$firstValue = $value;
$lastValue = null;
}
// New last value and is the same or 1 more or ongoing value
else if ((is_null($lastValue) && $value == 1 + $firstValue) || $value
== 1 + $lastValue)
{
$lastValue = $value;
}
// We have a break;
else
{
if (!is_null($lastValue))
{
$newData[] = "$firstValue-$lastValue";
}
else
{
$newData[] = "$firstValue";
}
$lastValue = null;
$firstValue = $value;
}
}
if (!is_null($firstValue))
{
if (!is_null($lastValue))
{
$newData[] = "$firstValue-$lastValue";
}
else
{
$newData[] = "$firstValue";
}
}
print_r($newData);
?>
outputs ...
Array
(
[0] => 300-314
[1] => 165-173
[2] => 201-215
[3] => 101
[4] => 315-316
[5] => 987
)
--
Richard Quadling
Twitter : EE : Zend
@RQuadling : e-e.com/M_248814.html : bit.ly/9O8vFY
--
PHP General Mailing List (http://www.php.net/)
To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] a quick question about array keys
On 31 August 2010 17:49, Richard Quadling wrote: > On 31 August 2010 17:39, Richard Quadling wrote: >> On 31 August 2010 17:06, Tontonq Tontonq wrote: >>> Array >>> ( >>> [300] => 300 >>> [301] => 301 >>> ... If you add a ... sort($data) ... just before the foreach() loop... Array ( [0] => 101 [1] => 165-173 [2] => 201-215 [3] => 300-316 [4] => 987 ) Watch out for duplicate values. I changed 315 and 316 to 305 and 306... unsorted ... Array ( [0] => 300-314 [1] => 165-173 [2] => 201-215 [3] => 101 [4] => 305-306 [5] => 987 ) sorted ... Array ( [0] => 101 [1] => 165-173 [2] => 201-215 [3] => 300-305 [4] => 305-306 [5] => 306-314 [6] => 987 ) -- Richard Quadling Twitter : EE : Zend @RQuadling : e-e.com/M_248814.html : bit.ly/9O8vFY -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
