PHP | Delete an element from an array using unset() function

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mahmoud2506

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2022-05-25

226

Given an array and we have to remove an element from the array.

unset() function

To remove an element from an array, we can use a PHP library unset() function, it accepts the index and removes the element exists on the specified index.

We are also using another function var_dump() – which dumps the variable details i.e. here, it will print the array variable.

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mahmoud2506

2022-05-25

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PHP code to remove an element from an array

<?php
//PHP code to remove an element from an array 

//declaring an array of strings
$array = array('the','quick','brown','fox');

//printing the array variable
var_dump($array);

//removing element from 1st index
unset ($array[1]);

//again, printing the array variable
var_dump($array);

//assigning the array after removing its element
//from 1st index to the new array
$array_new=array_values($array);

//printing the new array variable
var_dump($array_new);
?>

Output

array(4) {
  [0]=>
  string(3) "the"
  [1]=>
  string(5) "quick"  
  [2]=>
  string(5) "brown"  
  [3]=>
  string(3) "fox" 
}
array(3) {
  [0]=>
  string(3) "the" 
  [2]=>
  string(5) "brown"  
  [3]=>
  string(3) "fox" 
}
array(3) {
  [0]=>
  string(3) "the" 
  [1]=>
  string(5) "brown"  
  [2]=>
  string(3) "fox" 
}

Explanation:

Here, We've created an array ($array) and then used the PHP unset() method to remove index 1 (which is the 2nd value since array starts from 0). Once that's removed, we print the array using var_dump but there is a problem that the indexes haven't updated. So, we create $array_new by using array_values() method on the existing $array.

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