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<?php $arr1; $arr2 = array(); $arr3 = array(1,2,3); var_dump((bool) $arr1); var_dump((bool) $arr2); var_dump((bool) $arr3);
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
Warning: Undefined variable $arr1 in /in/T34ND on line 7 bool(false) bool(false) bool(true)
Output for 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 - 5.5.36, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.12 - 7.3.31, 7.4.0 - 7.4.25, 7.4.27 - 7.4.33
Notice: Undefined variable: arr1 in /in/T34ND on line 7 bool(false) bool(false) bool(true)
Output for 7.3.32 - 7.3.33, 7.4.26
bool(false) bool(false) bool(true)
Output for 5.0.4 - 5.0.5
Notice: Undefined variable: arr1 in /in/T34ND on line 3 Notice: Undefined variable: arr1 in /in/T34ND on line 7 bool(false) bool(false) bool(true)
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.3
Notice: Undefined variable: arr1 in /in/T34ND on line 3 Notice: Undefined variable: arr1 in /in/T34ND on line 7 bool(false) bool(false) bool(true)

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240.08 ms | 402 KiB | 344 Q