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PHP Program for removing an element from an array using the unset () function

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Examples:
Input: $arr = array ("Harsh", "Nishant", "Bikash", "Barun"); unset ($arr [3]); Output: Array ([0] = > Harsh [1] = > Nishant [2] = > Bikash) Input: $arr = array (1, 2, 6, 7, 8, 9); unset ($arr [3]); Output: Array ([0] = > 1 [1] = > 2 [2] = > 6 [4] = > 8 [5] = > 9) 
unset() function : The function takes a variable name as a parameter and destroys or resets the variable.Approach.The idea of ​​solving this problem using the unset function is to pass the array key of the corresponding element that we want to remove from the array as a parameter to this function and thus remove the value associated with it, that is, an array element. by this indicator.The programs below illustrate the above approach:Program 1: $a = array ( "Harsh" , "Bikash" , "Nishant" , "Barun" , "Deep" ); // the unset command takes the third index and // thus deletes the array element in // this position unset ( $a [3]) ; print_r ( $a );  
?>
Output:
Array ([ 0] = > Harsh [1] = > Bikash [2] = > Nishant [4] = > Deep) 
Program 2: $a = array (1, 8, 9, 7, 3, 5, 4,); // the unset command takes the third index and // thus removes the array element // at this position unset ( $a [5]) ; print_r ( $a );  
?>
Output:
Array ([ 0] = > 1 [1] = > 8 [2] = > 9 [3] = > 7 [4] = > 3 [6] = > 4) 
Note : array keys will not be reordered after using the unset() function.

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