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<?php $a = 4; function foo(&$t) { $t++; } var_dump($a); foo($a); var_dump(a);
Output for git.master, git.master_jit, rfc.property-hooks
int(4) Fatal error: Uncaught Error: Undefined constant "a" in /in/D7YM3:10 Stack trace: #0 {main} thrown in /in/D7YM3 on line 10
Process exited with code 255.

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