array_pop() to take out last element and returning the same of the array in PHP

array_pop(): remove the last array value

array_pop() removes and returns the last value of an array. The input array is changed in place; an empty array returns null.

$items = ['red', 'green', 'blue'];
$removed = array_pop($items);
print_r($items);
echo $removed;

Use array_pop() when the collection behaves like a stack and you need the removed value.

$output=array_pop($input);

array_pop() to remove last element of the array

Take out the last element of the array and returns the same. After applying array_pop() total elements of the array reduces by one. All numerical array keys remain same as last element is removed. Literal keys remain same.

Returns the shifted element ( last element ) of the array.

Here $input is an array, $output get the value of last element of the array.

$input=array('One','Two','Three','Four');
$output=array_pop($input);
echo $output;// Output : Four
echo "<br><br>";
foreach ($input as $key => $val) {
echo "$key -> $val <br>";
}

Output of above code is here( $output gets the last element Four )

Four

0 -> One 
1 -> Two 
2 -> Three

With Literal Keys

$input=array('Fruits1' =>'Banana','Fruits2'=>'Mango','Fruits3'=>'Apple','Fruits4'=>'Grapes');
$output=array_pop($input);
echo $output;// Output : Grapes
echo "<br><br>";
foreach ($input as $key => $val) {
echo "$key -> $val <br>";
}

Output is here, ( $output gets the first element Grapes)

Grapes

Fruits1 -> Banana 
Fruits2 -> Mango 
Fruits3 -> Apple

Using end & current

By using current() we can get the element to which the present internal pointer is pointing. We can move the pointer to last element by using end.

$input=array('Fruits1' =>'Banana','Fruits2'=>'Mango','Fruits3'=>'Apple','Fruits4'=>'Grapes');
end($input);
echo current($input); 
echo "<br>";
$output=array_pop($input);
end($input);
echo current($input);

Output is here.( The last element is changed from Grapes to Apple)

Grapes
Apple

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

Joining Two Arrays by array_merge
Array REFERENCE

Subhendu Mohapatra

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array_pop(): Taking out last element of the array

array_pop(): remove the last array value

With Literal Keys

Using end & current

Subhendu Mohapatra