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run code in 300+ PHP versions simultaneously
<?php function foo($a) { bar($a++); } function bar($a) { echo '$a = '.$a."\n"; debug_print_backtrace(); } foo(1);
Output for 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6
$a = 1 #0 /in/br8Co(2): bar(1) #1 /in/br8Co(4): foo(2)
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 $a = 1 #0 /in/br8Co(2): bar(1) #1 /in/br8Co(4): foo(2)
Output for 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
$a = 1 #0 bar(1) called at [/in/br8Co:2] #1 foo(2) called at [/in/br8Co:4]
preferences:
166.9 ms | 402 KiB | 199 Q