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<?php $a = ""; function foo() { return "bar"; } $eval = '$a = ' .foo() . ';'; var_dump($eval); eval($eval); echo $a;
Output for git.master, git.master_jit, rfc.property-hooks
string(9) "$a = bar;" Fatal error: Uncaught Error: Undefined constant "bar" in /in/ISKsV(12) : eval()'d code:1 Stack trace: #0 /in/ISKsV(12): eval() #1 {main} thrown in /in/ISKsV(12) : eval()'d code on line 1
Process exited with code 255.

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