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<?php $a = "abcdefffefa"; $b = "afe"; print(str_replace(array_uniq(explode('', $a)), '', $b));
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Uncaught Error: Call to undefined function array_uniq() in /in/PX8bg:6 Stack trace: #0 {main} thrown in /in/PX8bg on line 6
Process exited with code 255.

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