<?php $array = ["post: 746", "post: 2", "post: 84"]; var_export(array_map(function($v){return filter_var($v, FILTER_SANITIZE_NUMBER_INT);}, $array)); // remove all non-integer characters var_export(preg_replace('~^post: ~', '', $array, 1)); // only necessary if you have non-"post: " substrings var_export(array_map(function($v){return trim($v, ': opst');}, $array)); // I shuffled the character mask to prove order doesn't matter
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