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<?php var_dump(boolval(null)); var_dump(boolval(0)); var_dump(boolval(1)); var_dump(boolval(-1)); var_dump(boolval('')); var_dump(boolval('0')); var_dump(boolval('false'));
Output for 5.5.24 - 7.1.0
bool(false) bool(false) bool(true) bool(true) bool(false) bool(false) bool(true)
Output for 5.0.0 - 5.4.45
Fatal error: Call to undefined function boolval() in /in/uU4ki on line 4
Process exited with code 255.
Output for 4.4.5 - 4.4.9
Fatal error: Call to undefined function: boolval() in /in/uU4ki on line 4
Process exited with code 255.
Output for 4.3.2 - 4.4.4
Fatal error: Call to undefined function: boolval() in /in/uU4ki on line 4
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Call to undefined function: boolval() in /in/uU4ki on line 4