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156.19 ms | 1399 KiB | 7 Q<?php
function checkDuplicatesInArray($array){
$duplicates=FALSE;
foreach($array as $k=>$i){
if(!isset($value_{$i})){
$value_{$i}=TRUE;
}
else{
$duplicates|=TRUE;
}
}
return ($duplicates);
}
var_export(checkDuplicatesInArray([1, 1.5]));