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run code in 500+ PHP versions simultaneously
<?php class Test {function mb_strlen($v){return mb_strlen($v);}} $type = 'mb_str'; $obj = new Test; if (version_compare(PHP_VERSION, "7.0", ">=")) { echo eval('return $obj->{$type . "len"}($type);'); }
Output for git.master, rfc.property-hooks, git.master_jit
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