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<?php if(!$str) { echo 'EMPTY', ','; } else { echo 'NOT EMPTY', ','; } if(empty($str)) { echo 'EMPTY', ','; } else { echo 'NOT EMPTY', ','; } if(!strlen($str)) { echo 'EMPTY', ','; } else { echo 'NOT EMPTY', ','; }
Output for 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
Warning: Undefined variable $str in /in/T16GS on line 2 EMPTY,EMPTY, Warning: Undefined variable $str in /in/T16GS on line 13 Deprecated: strlen(): Passing null to parameter #1 ($string) of type string is deprecated in /in/T16GS on line 13 EMPTY,
Output for 8.0.0 - 8.0.30
Warning: Undefined variable $str in /in/T16GS on line 2 EMPTY,EMPTY, Warning: Undefined variable $str in /in/T16GS on line 13 EMPTY,
Output for 5.0.4 - 5.0.5, 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 - 5.5.35, 5.6.0 - 5.6.21, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.25, 7.4.27 - 7.4.33
Notice: Undefined variable: str in /in/T16GS on line 2 EMPTY,EMPTY, Notice: Undefined variable: str in /in/T16GS on line 13 EMPTY,
Output for 7.3.32 - 7.3.33, 7.4.26
EMPTY,EMPTY,EMPTY,
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.3
Notice: Undefined variable: str in /in/T16GS on line 2 EMPTY,EMPTY, Notice: Undefined variable: str in /in/T16GS on line 13 EMPTY,

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277.1 ms | 402 KiB | 384 Q