3v4l.org

run code in 300+ PHP versions simultaneously
<?php var_dump(empty( $var )); var_dump( isset( $var ) && $var == NULL ); var_dump(is_null($var)); var_dump($var === NULL);
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6
bool(true) bool(false) Warning: Undefined variable $var in /in/s7hi2 on line 5 bool(true) Warning: Undefined variable $var in /in/s7hi2 on line 6 bool(true)
Output for 8.3.5
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 bool(true) bool(false) Warning: Undefined variable $var in /in/s7hi2 on line 5 bool(true) Warning: Undefined variable $var in /in/s7hi2 on line 6 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, 5.6.7 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.10, 7.2.0 - 7.2.33, 7.3.12 - 7.3.31, 7.4.0 - 7.4.33
bool(true) bool(false) Notice: Undefined variable: var in /in/s7hi2 on line 5 bool(true) Notice: Undefined variable: var in /in/s7hi2 on line 6 bool(true)
Output for 7.3.32 - 7.3.33
bool(true) bool(false) 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(false) Notice: Undefined variable: var in /in/s7hi2 on line 5 bool(true) Notice: Undefined variable: var in /in/s7hi2 on line 6 bool(true)

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181.31 ms | 402 KiB | 312 Q