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<?php function p($x) { echo "x"; if (x<= 2) { return 2; } else { return p(x-1)+p(x-2) -1; } } var_dump(p(p(5)));
Output for git.master, git.master_jit, rfc.property-hooks
x Fatal error: Uncaught Error: Undefined constant "x" in /in/LClUW:5 Stack trace: #0 /in/LClUW(12): p(5) #1 {main} thrown in /in/LClUW on line 5
Process exited with code 255.

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