3v4l.org

run code in 300+ PHP versions simultaneously
<?php $x = [ '1.5' => 'bar' ]; echo $x[1.5];
Output for 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
Deprecated: Implicit conversion from float 1.5 to int loses precision in /in/Uu4hm on line 7 Warning: Undefined array key 1 in /in/Uu4hm on line 7
Output for 8.0.0 - 8.0.30
Warning: Undefined array key 1 in /in/Uu4hm on line 7
Output for 5.6.0 - 5.6.25, 7.0.0 - 7.0.20, 7.1.0 - 7.1.7, 7.2.0 - 7.2.33, 7.3.16 - 7.3.31, 7.4.0 - 7.4.33
Notice: Undefined offset: 1 in /in/Uu4hm on line 7
Output for 7.3.32 - 7.3.33

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148.31 ms | 401 KiB | 178 Q