PHP array_push() Function
Quick summary: The PHP array_push() function adds one or more elements to the end of an array.
PHP array_push() Syntax
array_push(array &$array, mixed ...$values): intPHP
PHP array_push() Basic examples
$stack = [1,2];
array_push($stack, 3);
print_r($stack);PHP
Output:
Array ( [0] => 1 [1] => 2 [2] => 3 )Adds a single element to the end of the array.
$stack = [1];
array_push($stack, 2, 3);
print_r($stack);PHP
Output:
Array ( [0] => 1 [1] => 2 [2] => 3 )Adds multiple elements at once.
PHP array_push() Real-world usage
$log = [];
array_push($log, 'Start process');
print_r($log);PHP
Output:
Array ( [0] => Start process )Append log entries dynamically.
PHP array_push() Edge cases
$array = [];
$count = array_push($array, 'a');
var_dump($count);PHP
Output:
int(1)Returns the new number of elements in the array.
PHP array_push() Common mistakes
Using array_push() for single value unnecessarily
Using $array[] = $value is faster and cleaner.
Incorrect
array_push($array, 'value');Correct
$array[] = 'value';Prefer bracket syntax for single element insertion.
PHP array_push() Frequently Asked Questions
What does array_push() do?
Adds one or more elements to the end of an array.
Use case?
Appending values.
Return value?
New length of array.
Common mistake?
Using instead of [].
Modifies array?
Yes.
Performance?
Slightly slower than [].
Supports multiple values?
Yes.
Safe?
Yes.
Alternative?
$arr[].
Handles empty array?
Yes.
Used in stacks?
Yes.
Best practice?
Prefer [] syntax.