PHP Array Exercises : Delete an element from an array
4. Delete Element & Normalize Keys
$x = array(1, 2, 3, 4, 5);
Delete an element from the above array. After deleting the element, integer keys must be normalized.
Sample Solution:
PHP Code:
<?php
// Create an indexed array $x with elements 1, 2, 3, 4, 5
$x = array(1, 2, 3, 4, 5);
// Dump the variable $x to display its structure and values
var_dump($x);
// Unset the element with index 3 in the array $x
unset($x[3]);
// Reset the array indices after unset using array_values()
$x = array_values($x);
// Echo a newline character for better formatting
echo '';
// Dump the variable $x again after unset and array_values
var_dump($x);
?>
Output:
array(5) {
[0]=>
int(1)
[1]=>
int(2)
[2]=>
int(3)
[3]=>
int(4)
[4]=>
int(5)
}
array(4) {
[0]=>
int(1)
[1]=>
int(2)
[2]=>
int(3)
[3]=>
int(5)
}
Flowchart:
For more Practice: Solve these Related Problems:
- Write a PHP script that deletes a specified element from an indexed array and then reindexes the array ensuring sequential numeric keys.
- Write a PHP function to remove an element by value from an array and normalize the keys using array_values().
- Write a PHP program to drop a particular index from an array and then output the array with freshly normalized keys.
- Write a PHP script to remove all occurrences of a given value from an array and reassign keys to maintain a continuous index sequence.
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