array adding elements at the end by using array

array_push ($input_array,'input element')

array_push() to add element at the end of the array

By using array_push() we can add elements ( single or a set of elements ) at the end of the array.
We will first create an array like this

$stack = array (1, 2);

array_push ($stack,3,4,5,6);  // we are adding four more elements to the array 

echo count($stack);

This will display total number of elements inside the array , that is 6 here.

Create an array with three elements and then add two more elements to it. Check the keys also.

$input=array(0=>'a',1=>'b',2=>'c');
array_push($input,'d','e','f');
while (list ($key, $val) = each ($input)) {
echo "$key -> $val <br>";
}

Output of above code is here

0 -> a 
1 -> b 
2 -> c 
3 -> d 
4 -> e 
5 -> f

Adding 1 to 10 ( or 1 to 100 ) numbers into an array

$input=array();
for($i=1;$i<=10;$i++){
array_push($input,$i);
}
while (list ($key, $val) = each ($input)) {
echo "$key -> $val <br>";
}

Output is here

0 -> 1 
1 -> 2 
2 -> 3 
3 -> 4 
4 -> 5 
5 -> 6 
6 -> 7 
7 -> 8 
8 -> 9 
9 -> 10

With Literal Keys

$input=array('Fruits1' =>'Banana','Fruits2'=>'Mango','Fruits3'=>'Apple','Fruits4'=>'Grapes');
$output=array_push($input, 'Strawberry');
echo $output; // Output is 5 
echo "<br><br>";
while (list ($key, $val) = each ($input)) {
echo "$key -> $val <br>";
}

Output is here.

5

Fruits1 -> Banana 
Fruits2 -> Mango 
Fruits3 -> Apple 
Fruits4 -> Grapes 
0 -> Strawberry

Now key of the last element is 0. To add one element with key at the end to an associative array we have to use the code below.

$input=array('Fruits1' =>'Banana','Fruits2'=>'Mango','Fruits3'=>'Apple','Fruits4'=>'Grapes');
$input=$input + array('New_fruit'=>'Strawberry');
while (list ($key, $val) = each ($input)) {
echo "$key -> $val 
";
}

Output is here

Fruits1 -> Banana 
Fruits2 -> Mango 
Fruits3 -> Apple 
Fruits4 -> Grapes 
New_fruit -> Strawberry

Adding elements to Multidimensional array

Here is the code to add elements to multidimensional array

$a=array(array("product"=>"apple","quantity"=>2),
array("product"=>"Orange","quantity"=>4),
array("product"=>"Banana","quantity"=>5),
array("product"=>"Mango","quantity"=>7),
); 

$b=array("product"=>"Lemon","quantity"=>9);
array_push($a,$b);
//$a[]=$b;
$max=sizeof($a);
for($i=0; $i<$max; $i++) { 

while (list ($key, $val) = each ($a[$i])) { 
echo "$key -> $val "; 
} // inner array while loop
echo "<br>";
} // outer array for loop

Array Adding & Removing Elements
array_pop(): Removing Last element of the Array
array_shift(): Removing First element of the Array
array_unset(): Removing element from any position of the Array
array_push(): Adding elements at the end of the Array
array_unshift(): Adding elements at the beginning of the Array

We have seen how elements are added to an array. But we may require to add two arrays.
Joining Two Arrays by array_merge
Array REFERENCE

Subhendu Mohapatra

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PHP array adding elements at the end

With Literal Keys

Adding elements to Multidimensional array

Subhendu Mohapatra