消除多维数组中的重复项

Posted 2021-02-25

Courtesy of Dorphalsig on php.net (see URL above)

// remove duplicate elements from n-dimensional arrays
function uniqueArray($nDimArray) {
 
    foreach($nDimArray as &$val) {
        $val = serialize($val);
    }
    $nDimArray = array_unique($nDimArray);
    foreach($nDimArray as &$val) {
        $val = unserialize($val);
    }
    return $nDimArray;
}