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<?php $array = array("123", "1244","34124","123"); $dupe_array = array(); foreach($array as $val){ if(++$dupe_array[$val] > 1){ echo "has duplicate"; } } echo "has no duplicate";
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Warning: Undefined array key 123 in /in/oOp1r on line 6 Warning: Undefined array key 1244 in /in/oOp1r on line 6 Warning: Undefined array key 34124 in /in/oOp1r on line 6 has duplicatehas no duplicate
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 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 - 7.4.33
Notice: Undefined offset: 123 in /in/oOp1r on line 6 Notice: Undefined offset: 1244 in /in/oOp1r on line 6 Notice: Undefined offset: 34124 in /in/oOp1r on line 6 has duplicatehas no duplicate
Output for 7.3.32 - 7.3.33
has duplicatehas no duplicate
Output for 5.3.0 - 5.3.29
Notice: Undefined index: 123 in /in/oOp1r on line 6 Notice: Undefined index: 1244 in /in/oOp1r on line 6 Notice: Undefined index: 34124 in /in/oOp1r on line 6 has duplicatehas no duplicate
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
Notice: Undefined index: 123 in /in/oOp1r on line 6 Notice: Undefined index: 1244 in /in/oOp1r on line 6 Notice: Undefined index: 34124 in /in/oOp1r on line 6 has duplicatehas no duplicate
preferences:
209.98 ms | 402 KiB | 356 Q