Match non-alphanumeric characters from a string
by Gabriel on 05/10/08 at 6:57 am
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This is a snippet that matches non-alphanumeric characters from a string (text).
<?php
function match_non_alphanumeric_characters($string, $strip_space = true) // Match spaces?
{
$str = ($strip_space) ? ' ' : '';
preg_match_all('/([^a-zA-Z0-9'.$str.']+)/', $string, $match);
return $match[0];
}
$string = 'Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Praesent porttitor euismod enim # Sed posuere & Duis non elit * Sed tempus dolor$';
$non_alphanumeric_array = match_non_alphanumeric_characters($string);
echo '<pre>'; print_r($non_alphanumeric_array); echo "</pre>";
?>
Output:
Array
(
[0] => ,
[1] => .
[2] => #
[3] => &
[4] => *
[5] => $
)
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