3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = [1,2,3]; $b = &$a; foreach($a as $v) { echo "$v\n"; unset($b[1]); } $param_names = array( 'keyword', 'target_form_name', 'target_category_select_name', 'target_item_select_name', 'book_id' ); $c = 0; foreach( $param_names as $name ) { ${$name} = ++$c; } foreach( $param_names as $name ) { echo $$name . "\n"; }
Output for 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
1 2 3 1 2 3 4 5
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 1 2 3 1 2 3 4 5
Output for 5.6.0 - 5.6.40
1 3 1 2 3 4 5
preferences:
208.4 ms | 401 KiB | 288 Q