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<?php function convert_case($name) { return implode( '_', array_map( 'strtolower', preg_split('/([A-Z][^A-Z]*)/', $name, null, PREG_SPLIT_DELIM_CAPTURE | PREG_SPLIT_NO_EMPTY) ) ); } echo json_encode(array_map(convert_case, array("FooBar", "FooBAR")), JSON_PRETTY_PRINT);
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Uncaught Error: Undefined constant "convert_case" in /in/6MjMI:15 Stack trace: #0 {main} thrown in /in/6MjMI on line 15
Process exited with code 255.

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