Checking during array iteration, if the current element is the last element

Question

Please help me to translate this pseudo-code to real php code:

 foreach ($arr as $k => $v)     if ( THIS IS NOT THE LAST ELEMENT IN THE ARRAY)         doSomething(); 

Edit: the array may have numerical or string keys

Answer 1

you can use PHP's end()

$array = array('a' => 1,'b' => 2,'c' => 3); $lastElement = end($array); foreach($array as $k => $v) {     echo $v . '<br/>';     if($v == $lastElement) {          // 'you can do something here as this condition states it just entered last element of an array';      } } 

Update1

as pointed out by @Mijoja the above could will have problem if you have same value multiple times in array. below is the fix for it.

$array = array('a' => 1, 'b' => 2, 'c' => 3, 'd' => 2); //point to end of the array end($array); //fetch key of the last element of the array. $lastElementKey = key($array); //iterate the array foreach($array as $k => $v) {     if($k == $lastElementKey) {         //during array iteration this condition states the last element.     } } 

Update2

I found solution by @onteria_ to be better then what i have answered since it does not modify arrays internal pointer, i am updating the answer to match his answer.

$array = array('a' => 1, 'b' => 2, 'c' => 3, 'd' => 2); // Get array keys $arrayKeys = array_keys($array); // Fetch last array key $lastArrayKey = array_pop($arrayKeys); //iterate array foreach($array as $k => $v) {     if($k == $lastArrayKey) {         //during array iteration this condition states the last element.     } } 

Thank you @onteria_

Update3

As pointed by @CGundlach PHP 7.3 introduced array_key_last which seems much better option if you are using PHP >= 7.3

$array = array('a' => 1,'b' => 2,'c' => 3); $lastKey = array_key_last($array); foreach($array as $k => $v) {     echo $v . '<br/>';     if($k == $lastKey) {          // 'you can do something here as this condition states it just entered last element of an array';      } } 

Answer 2

This always does the trick for me

foreach($array as $key => $value) {    if (end(array_keys($array)) == $key)        // Last key reached } 

Edit 30/04/15

$last_key = end(array_keys($array)); reset($array);  foreach($array as $key => $value) {   if ( $key == $last_key)       // Last key reached } 

To avoid the E_STRICT warning mentioned by @Warren Sergent

$array_keys = array_keys($array); $last_key = end($array_keys);