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<?php $data = array(a => 'foo bar baz'); $data = array_map(function($value) { return str_replace('bar', 'xxx', $value); }, $data); print_r($data);
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Uncaught Error: Undefined constant "a" in /in/9lGIC:2 Stack trace: #0 {main} thrown in /in/9lGIC on line 2
Process exited with code 255.

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