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run code in 300+ PHP versions simultaneously
<?php class Foo { public $bar; } $foo = new Foo; $arr = array("", " ", FALSE, TRUE, array(), NULL, "0", 0, 0.0, new stdClass, $foo, $foo->bar, "\0"); define('PAD', 20); $headings = array('type', 'if', 'isset', 'empty', 'is_null'); foreach($headings as $heading){ echo str_pad($heading, PAD), " | "; } echo "\n"; $x = str_pad("TRUE", PAD) . " | "; $y = str_pad("", PAD) . " | "; foreach($arr as $val){ var_export($val); /* echo str_pad(print($val), PAD), " | "; echo $val ? $x : $y; echo isset($val) ? $x : $y; echo empty($val) ? $x : $y; echo is_null($val) ? $x : $y; echo "\n"; */ }
Output for 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6
type | if | isset | empty | is_null | ''' 'falsetruearray ( )NULL'0'00.0(object) array( )\Foo::__set_state(array( 'bar' => NULL, ))NULL'' . "\0" . ''
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 type | if | isset | empty | is_null | ''' 'falsetruearray ( )NULL'0'00.0(object) array( )\Foo::__set_state(array( 'bar' => NULL, ))NULL'' . "\0" . ''
Output for 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28
type | if | isset | empty | is_null | ''' 'falsetruearray ( )NULL'0'00.0(object) array( )Foo::__set_state(array( 'bar' => NULL, ))NULL'' . "\0" . ''
Output for 7.0.2 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33
type | if | isset | empty | is_null | ''' 'falsetruearray ( )NULL'0'00.0stdClass::__set_state(array( ))Foo::__set_state(array( 'bar' => NULL, ))NULL'' . "\0" . ''
Output for 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.1
type | if | isset | empty | is_null | ''' 'falsetruearray ( )NULL'0'00stdClass::__set_state(array( ))Foo::__set_state(array( 'bar' => NULL, ))NULL'' . "\0" . ''
preferences:
215.49 ms | 402 KiB | 228 Q