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run code in 500+ PHP versions simultaneously
<?php namespace { // global class Yii { public static function abc() { echo 'hello', PHP_EOL; } } } namespace A\Name\Space { use Yii; Yii::abc(); // resolved to the global namespace // without the use statement php would resolve Yii === A\Name\Space\Yii } namespace { // global again use Yii; // warning, resolved at compile time. Yii::abc(); // you aliased Yii with Yii }
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
Warning: The use statement with non-compound name 'Yii' has no effect in /in/K0D61 on line 16 hello hello
preferences:
97 ms | 2344 KiB | 4 Q