Add
Add or remove element from array
/**
* array_push() add at the end
* array_shift() extract first
* array_unshift() add at beggining
* arrau_pop() extract last
*/
$A = [1, 2];
$B = [2, 3];
$C = [1, 2];
$D = [2, 4];
array_push($A, 3);
$A[] = 4; // faster
print_r($A); // 1,2,3,4
echo array_shift($B); // 2 (first)
array_unshift($C, 100);
print_r($C); // 100,1,2
echo array_pop($D); // 4
Slice
Extract a slice of the array
/**
* array_slice(), array_splice()
*
* Extract or remove a portion from array
*/
$A = [1, 2, 3, 4, 5];
print_r(array_slice($A, 2)); // 3, 4, 5
print_r(array_slice($A, 0, 2)); // 1, 2
print_r(array_slice($A, -2, 1)); // [0] => 4
print_r(array_slice($A, -2, 1, true)); // [3] => 4 (preserve keys)
$B = array(1, 2, 3, 4, 5);
print_r(array_splice($B, 2)); // [ 1, 2 ]
Duplicates
array_unique() - Remove duplicate values from an array
/**
* array_unique()
*
* Removes duplicate values from an array
*/
$A = [1, 2, 'b'=>'green', 2];
$B = array_unique($A);
print_r($B); // 1, 2, green
Padding
Pad array to the specified length with a value.
/**
* array_pad()
*
* Pad an array to the specified length
*/
$A = [1,2,3];
$B = array_pad($A, 6, 0);
print_r($B); // 1, 2, 3, 0, 0, 0
echo str_pad(111, 6, 0); // 111000
Last update: 234 days ago
