Removing Array Element and Re-Indexing in PHP

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In order to remove an element from an array, we can use unset() function which removes the element from an array and then use array_values() function which indexes the array numerically automatically.

Function Used:

unset(): This function unsets a given variable.
Syntax:
```
void unset ( mixed $var [, mixed $... ] )
```
array_values(): This function returns all the values from the array and indexes the array numerically.
Syntax:
```
array array_values ( array $array )
```

Example 1:

<?php  
$arr1 = array( 
  
    'zambiatek', // [0] 
    'for', // [1] 
    'zambiatek' // [2] 
  
); 
  
// remove item at index 1 which is 'for' 
unset($arr1[1]);  
  
// Print modified array 
var_dump($arr1); 
  
// Re-index the array elements 
$arr2 = array_values($arr1); 
  
// Print re-indexed array 
var_dump($arr2); 
?> 

Output:

array(2) {
  [0]=>
  string(5) "zambiatek"
  [2]=>
  string(5) "zambiatek"
}
array(2) {
  [0]=>
  string(5) "zambiatek"
  [2]=>
  string(5) "zambiatek"
}

We can also use array_splice() function which removes a portion of the array and replaces it with something else.
Example 2:

<?php  
$arr1 = array( 
    'zambiatek', // [0] 
    'for', // [1] 
    'zambiatek' // [2] 
); 
  
// remove item at index 1 which is 'for' 
array_splice($arr1, 1, 1);  
  
// Print modified array 
var_dump($arr1); 
?> 

Output:

array(2) {
  [0]=>
  string(5) "zambiatek"
  [1]=>
  string(5) "zambiatek"
}

PHP is a server-side scripting language designed specifically for web development. You can learn PHP from the ground up by following this PHP Tutorial and PHP Examples.