3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = '0e123'; var_dump($a == 0); var_dump($a == '0'); var_dump($a == "0"); var_dump($a == true); echo "\n"; $null = null; var_dump($a == $undefined); var_dump($a == $null); var_dump($a == "$null"); var_dump($a == 0,e); var_dump($a == 0x0); var_dump($a == 0xe); var_dump($a == 0x0e); var_dump($a == "0xe"); var_dump($a == '0xe'); echo "\nBonus:\n"; var_dump($a == '0xe0'); var_dump($a == '0x0e'); var_dump($a == ('0' . 'x0e'));
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.19, 8.3.0 - 8.3.7
bool(true) bool(true) bool(true) bool(true) Warning: Undefined variable $undefined in /in/d0Dfp on line 10 bool(false) bool(false) bool(false) Fatal error: Uncaught Error: Undefined constant "e" in /in/d0Dfp:13 Stack trace: #0 {main} thrown in /in/d0Dfp on line 13
Process exited with code 255.
Output for 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.33
bool(true) bool(true) bool(true) bool(true) Notice: Undefined variable: undefined in /in/d0Dfp on line 10 bool(false) bool(false) bool(false) Warning: Use of undefined constant e - assumed 'e' (this will throw an Error in a future version of PHP) in /in/d0Dfp on line 13 bool(true) string(1) "e" bool(true) bool(false) bool(false) bool(false) bool(false) Bonus: bool(false) bool(false) bool(false)
Output for 7.3.32 - 7.3.33
bool(true) bool(true) bool(true) bool(true) bool(false) bool(false) bool(false) Warning: Use of undefined constant e - assumed 'e' (this will throw an Error in a future version of PHP) in /in/d0Dfp on line 13 bool(true) string(1) "e" bool(true) bool(false) bool(false) bool(false) bool(false) Bonus: bool(false) bool(false) bool(false)
Output for 5.2.1 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.7 - 5.6.21, 7.0.0 - 7.0.20, 7.1.0 - 7.1.25
bool(true) bool(true) bool(true) bool(true) Notice: Undefined variable: undefined in /in/d0Dfp on line 10 bool(false) bool(false) bool(false) Notice: Use of undefined constant e - assumed 'e' in /in/d0Dfp on line 13 bool(true) string(1) "e" bool(true) bool(false) bool(false) bool(false) bool(false) Bonus: bool(false) bool(false) bool(false)
Output for 5.0.4 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0
bool(true) bool(true) bool(true) bool(true) Notice: Undefined variable: undefined in /in/d0Dfp on line 10 bool(false) bool(false) bool(false) Notice: Use of undefined constant e - assumed 'e' in /in/d0Dfp on line 13 bool(true) string(1) "e" bool(true) bool(false) bool(false) bool(true) bool(true) Bonus: bool(true) bool(true) bool(true)
Output for 4.3.10 - 4.3.11, 4.4.0 - 4.4.9, 5.0.3
bool(true) bool(true) bool(true) bool(true) Notice: Undefined variable: undefined in /in/d0Dfp on line 10 bool(false) bool(false) bool(false) Notice: Use of undefined constant e - assumed 'e' in /in/d0Dfp on line 13 bool(true) string(1) "e" bool(true) bool(false) bool(false) bool(true) bool(true) Bonus: bool(true) bool(true) bool(true)
Output for 4.3.0 - 4.3.9, 5.0.0 - 5.0.2
bool(true) bool(true) bool(true) bool(true) Notice: Undefined variable: undefined in /in/d0Dfp on line 10 bool(false) bool(false) bool(false) Notice: Use of undefined constant e - assumed 'e' in /in/d0Dfp on line 13 bool(true) string(1) "e" bool(true) bool(false) bool(false) bool(false) bool(false) Bonus: bool(false) bool(false) bool(false)
preferences:
217.38 ms | 402 KiB | 329 Q