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farinspace/trim_non_alphanum.php

Created August 6, 2018 17:28
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Trim non alpha-numeric characters from the beginning and end of a string
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trim_non_alphanum.php
<?php
function trim_non_alphanum( $str ) {
$str = preg_replace( '/^[^[:alnum:]]+/u', '', $str ); // beginning
return preg_replace( '/[^[:alnum:]]+$/u', '', $str ); // end
}
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