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<?php $re = '/^[^[]+\[|<\?php echo\s(.*?)\;\s\?\>(*SKIP)(*FAIL)|\]\[[^]]*\]/'; $str = 'customFields[<?php echo $field["id"]; ?>][type]'; preg_match_all($re, $str, $matches, PREG_SET_ORDER); print_r($matches);

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