I have a PHP array with a parent called "items." In that array, I want to remove all values that do not contain a string (which I'm gonna use regex to find). How would I do this?
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if you're just looking to match against a string, consider using strpos instead of a RegEx - faster, especially if the Array is large.Madbreaks– Madbreaks2012-04-26 17:22:30 +00:00Commented Apr 26, 2012 at 17:22
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2 Answers
foreach($array['items'] as $key=>$value) { // loop through the array
if( !preg_match("/your_regex/", $value) ) {
unset($array['items'][$key]);
}
}
Comments
You can try using array_filter.
$items = array(
#some values
);
$regex= '/^[some]+(regex)*$/i';
$items = array_filter($items, function($a) use ($regex){
return preg_match($regex, $a) !== 0;
});
NOTE: This only works in PHP 5.3+. In 5.2, you can do it this way:
function checkStr($a){
$regex= '/^[some]+(regex)*$/i';
return preg_match($regex, $a) !== 0;
}
$items = array(
#some values
);
$items = array_filter($items, 'checkStr');
1 Comment
Madbreaks
I prefer this approach to brute force looping over the array, good answer.