3v4l.org

run code in 300+ PHP versions simultaneously
<?php $data = array( 10, 123 ); if (version_compare(PHP_VERSION, "5.6", ">=")) { $buf = eval("return pack('N*', ...$data);"); } else { $buf = call_user_func_array("pack", array_merge(array("N*"), $data)); } $valArray = unpack( "N*", $buf ); while( list( $key, $val ) = each( $valArray ) ) { echo "$key -> $val\n"; }
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Warning: Array to string conversion in /in/9oTKi on line 5 Parse error: syntax error, unexpected token ")", expecting "(" in /in/9oTKi(5) : eval()'d code on line 1
Process exited with code 255.
Output for 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.33
Notice: Array to string conversion in /in/9oTKi on line 5 Parse error: syntax error, unexpected ')', expecting '(' in /in/9oTKi(5) : eval()'d code on line 1
Process exited with code 255.
Output for 7.3.32 - 7.3.33
Parse error: syntax error, unexpected ')', expecting '(' in /in/9oTKi(5) : eval()'d code on line 1
Process exited with code 255.
Output for 5.6.0 - 5.6.40
Notice: Array to string conversion in /in/9oTKi on line 5 Parse error: syntax error, unexpected ')', expecting '(' in /in/9oTKi(5) : eval()'d code on line 1
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 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, 5.5.0 - 5.5.38
1 -> 10 2 -> 123
preferences:
297.79 ms | 403 KiB | 460 Q