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run code in 300+ PHP versions simultaneously
<?php function foo() { $GLOBALS['stack'] = debug_backtrace(); } ob_start('foo'); ob_get_flush(); echo 1; print_r($stack);
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 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
1Array ( [0] => Array ( [function] => foo [args] => Array ( [0] => [1] => 9 ) ) [1] => Array ( [file] => /in/L2DMp [line] => 10 [function] => ob_get_flush [args] => Array ( ) ) )
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 1Array ( [0] => Array ( [function] => foo [args] => Array ( [0] => [1] => 9 ) ) [1] => Array ( [file] => /in/L2DMp [line] => 10 [function] => ob_get_flush [args] => Array ( ) ) )
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29
1Array ( [0] => Array ( [function] => foo [args] => Array ( [0] => [1] => 5 ) ) [1] => Array ( [file] => /in/L2DMp [line] => 10 [function] => ob_get_flush [args] => Array ( ) ) )
Output for 5.0.0 - 5.0.4
1Array ( [0] => Array ( [file] => /in/L2DMp [line] => 10 [function] => foo [args] => Array ( [0] => [1] => 5 ) ) [1] => Array ( [file] => /in/L2DMp [line] => 10 [function] => ob_get_flush [args] => Array ( ) ) )

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307.6 ms | 402 KiB | 459 Q