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<?php $subject = '{"_id":"scheme_version","_rev":"4-cad1842a7646b4497066e09c3788e724","scheme_version":1234}'; $pattern = '(?<=scheme_version":)[0-9]+'; echo preg_grep($subject, $pattern);
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Uncaught TypeError: preg_grep(): Argument #2 ($array) must be of type array, string given in /in/tDGpA:4 Stack trace: #0 /in/tDGpA(4): preg_grep('{"_id":"scheme_...', '(?<=scheme_vers...') #1 {main} thrown in /in/tDGpA on line 4
Process exited with code 255.

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