Extracting Multiple Image Numbers from a String

[kennygadams]

Hello PHP-ers,

I'm trying to get all the Image Numbers from a variable called $string, with all the other characters removed.

The image numbers are always numeric and formatted like 0000-0000-0000-0000.

Here is the code I'm working with...

$string = '[COLOR=red]0001-0611-2520-3615[/color] \t \r123 [COLOR=red]0001-0603-1919-3126[/color] abc >[COLOR=red]0001-0611-2223-1711[/color]</\n';
preg_match_all('/([^\d\d\d\d\-\d\d\d\d\-\d\d\d\d\-\d\d\d\d]+)/i', $string, $matches);
print_r($matches);

Any help is greatly appreciated.

Thanks.

Kenny Adams

http://www.acclaimimages.com/

 

[tsuji]

>I'm trying to get all the Image Numbers from a variable called $string, with all the other characters removed.
But the script seems doing the contrary? or I miss something. Try this?
[tt]
preg_match_all('/(?<!=\B)\d{4}-\d{4}-\d{4}-\d{4}(?!\B)/', $string, $matches);
[/tt]
I've made a provision of negative lookahead and lookbehind of word boundary so as to prepare you for further refinement to, for instance, only excluding digit or letter or something else according to the need.

 

[jpadie]

just playing around i came up with

<?
$string = '0001-0611-2520-3615 \t \r123 0001-0603-1919-3126 abc >0001-0611-2223-1711</\n';

preg_match_all('/([\d]{4}-?){4}/', $string, $matches);
print_r($matches);
?>

 

[kennygadams]

Thanks tsuji and jpadie. Your codes work exactly the same.

Here is the output from both codes...

Array ( [0] => 0001-0611-2520-3615 [1] => [2] => [3] => [4] => [5] => [6] => 123 [7] => 0001-0603-1919-3126 [8] => [9] => [10] => [11] => [12] => [13] => 0001-0611-2223-1711 [14] => [15] => [16] => [17] => )

Can the code below be tweaked a little more so that it only allows correctly formatted Image Numbers, (0000-0000-0000-0000), into the array?

$string = '0001-0611-2520-3615 \t \r123 0001-0603-1919-3126 abc >0001-0611-2223-1711</\n';

preg_match_all('/([\d]{4}-?){4}/', $string, $matches);
print_r($matches);

Thanks.


Kenny Adams

http://www.acclaimimages.com/