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run code in 300+ PHP versions simultaneously
<?php namespace Foo\PHP7; class Foo {} namespace Foo\PHP5; class Foo {} namespace Foo; if (version_compare(PHP_VERSION, '7.0.0', '<')) { class_alias('\Foo\PHP5\Foo', '\Foo\Foo'); } else { class_alias('\Foo\PHP7\Foo', '\Foo\Foo'); } $a = new \Foo\Foo(); var_Dump(get_class($a));
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 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 - 8.3.6
string(12) "Foo\PHP7\Foo"
Output for 5.4.20 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28
string(12) "Foo\PHP5\Foo"
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.19
Fatal error: Class 'Foo\Foo' not found in /in/LIjb2 on line 16
Process exited with code 255.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
Parse error: syntax error, unexpected T_STRING in /in/LIjb2 on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_STRING in /in/LIjb2 on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/LIjb2 on line 3
Process exited with code 255.
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