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<?php $input = 'tacocat'; $code = ''; var_dump((function() { return 1; })()); for ($i = 0; isset($input[$i]); $i++) { $code .= $code ? '.' : ''; $code .= sprintf('(function($str, $pos) { $length = (function($str) { for ($l = 0; isset($str[$l]); $l++) {} return $l - 1; })($str); return $str[$length - $pos]; })(%s, %u)', var_export($input, true), $i); $code .= "\n"; //$code .= sprintf('$input[ - %u]', $i); } //for ($i = strlen($input) - 1; $i >= 0; $i--) { // $code .= ($code ? '.' : '') . sprintf('$input[%s]', $i); //} $code = sprintf('return %s;', $code); var_dump($code); var_dump(eval($code));
Output for git.master, git.master_jit, rfc.property-hooks
int(1) string(1148) "return (function($str, $pos) { $length = (function($str) { for ($l = 0; isset($str[$l]); $l++) {} return $l - 1; })($str); return $str[$length - $pos]; })('tacocat', 0) .(function($str, $pos) { $length = (function($str) { for ($l = 0; isset($str[$l]); $l++) {} return $l - 1; })($str); return $str[$length - $pos]; })('tacocat', 1) .(function($str, $pos) { $length = (function($str) { for ($l = 0; isset($str[$l]); $l++) {} return $l - 1; })($str); return $str[$length - $pos]; })('tacocat', 2) .(function($str, $pos) { $length = (function($str) { for ($l = 0; isset($str[$l]); $l++) {} return $l - 1; })($str); return $str[$length - $pos]; })('tacocat', 3) .(function($str, $pos) { $length = (function($str) { for ($l = 0; isset($str[$l]); $l++) {} return $l - 1; })($str); return $str[$length - $pos]; })('tacocat', 4) .(function($str, $pos) { $length = (function($str) { for ($l = 0; isset($str[$l]); $l++) {} return $l - 1; })($str); return $str[$length - $pos]; })('tacocat', 5) .(function($str, $pos) { $length = (function($str) { for ($l = 0; isset($str[$l]); $l++) {} return $l - 1; })($str); return $str[$length - $pos]; })('tacocat', 6) ;" string(7) "tacocat"

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