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<?php function isQuadtree($bits, &$i = 0){ if ($i >= str_length($bits)) return false; if ($bits[$i] === "1") { isQuadtree($bits, $i++); isQuadtree($bits, $i++); isQuadtree($bits, $i++); return isQuadtree($bits, $i++); } return true; } var_dump(isQuadtree("110000"));
Output for git.master_jit, git.master
Fatal error: Uncaught Error: Call to undefined function str_length() in /in/jvqLl:4 Stack trace: #0 /in/jvqLl(14): isQuadtree('110000') #1 {main} thrown in /in/jvqLl on line 4
Process exited with code 255.

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