How to remove specified value from php array

Method: 1. First use the foreach statement to traverse the array and find the subscript corresponding to the specified value; then use the "unset(arr[subscript])" statement to delete; 2. First use the array_search() function to Search for a specific value in the array and return the corresponding key name; then use the unset() function to delete the element based on the key name.

The operating environment of this tutorial: windows7 system, PHP7.1 version, DELL G3 computer

Method 1: Using foreach and unset () function deletes a specific element in the array

public static function delByValue(&$arr, $value){
        if(!is_array($arr)){
            return $arr;
        }
        foreach($arr as $k=>$v){
            if($v == $value){
                unset($arr[$k]);
            }
        }
        return true;
    }

unset() function is used to destroy the given variable.

Method 2: Use the array_search() and unset() functions to delete specific values ​​in the array

First use the array_search() function to search for specific values ​​in the array and return The corresponding key name; then use the unset() function to delete the element based on the key name.

if(($key = array_search('day',$arr))){
unset($arr[$key]);
}

array_search() function searches for a key value in the array; if the value is found, the key name of the matching element will be returned; if not found, false is returned.

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