3v4l.org

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<?php $x = false; var_dump($x !== "" && $x == null); $x = 0; var_dump($x !== "" && $x == null); $x = array(); var_dump($x !== "" && $x == null); $x = 0.0; var_dump($x !== "" && $x == null); $x = null; var_dump($x !== "" && $x == null); // undefined var var_dump($y !== "" && $y == null);
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
bool(true) bool(true) bool(true) bool(true) bool(true) Warning: Undefined variable $y in /in/532He on line 14 Warning: Undefined variable $y in /in/532He on line 14 bool(true)
Output for 5.0.4 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.25, 7.4.27 - 7.4.33
bool(true) bool(true) bool(true) bool(true) bool(true) Notice: Undefined variable: y in /in/532He on line 14 Notice: Undefined variable: y in /in/532He on line 14 bool(true)
Output for 7.3.32 - 7.3.33, 7.4.26
bool(true) bool(true) bool(true) bool(true) bool(true) bool(true)
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.3
bool(true) bool(true) bool(true) bool(true) bool(true) Notice: Undefined variable: y in /in/532He on line 14 Notice: Undefined variable: y in /in/532He on line 14 bool(true)

preferences:
232.74 ms | 402 KiB | 354 Q