remove a key if value matches a pattern?

Question

i\'ve got an array with string values.

i want to search for a pattern with regex and if matched, remove the key containing the value.

how would i accomplish

Answer 1

preg_grep: http://php.net/manual/en/function.preg-grep.php

$a = array('foo' => 'xx', 'bar' => '12');
$b = preg_grep('~[a-z]~', $a, PREG_GREP_INVERT);
print_r($b);