<?php class x { public $a = [ '~.~' => '$this->waa($0);' ]; function p($s) { foreach($this->a as $p => $r) { $s = preg_replace_callback($p, function($m) use ($s){ $c = preg_replace('~\$(\d)~', '$m[$1]', $s); print "\n$c\n"; return eval($c); }, $s); } return $s; } function waa($t){ return '*'.$t.'*'; } } var_dump((new x)->p('wazup'));
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