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<?php function getDifference($a, $b) { echo (a-b); } getDifference(5, 3); ?>
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Uncaught Error: Undefined constant "a" in /in/eqjIc:3 Stack trace: #0 /in/eqjIc(5): getDifference(5, 3) #1 {main} thrown in /in/eqjIc on line 3
Process exited with code 255.

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