PHP - effective way to determine last loop in foreach

Question

Whenever I have to determine if currect loop in foreach cycle is the last one, i use something like this:

<?php
$i = count($myArray);
foreach ($myArray as $item) {
    /** code goes here... */
    $i--;
    if ($i == 0) {
        /** something happens here */
    }
}
?>

Typically this could by done very easily in templating systems (such as Latte, Smarty, etc...) by knowing the cycle variables (first, last,...). And my question: Is there a similar functionality in PHP?

The key is that you have to create the $i variable, then increase it and check the value. I just want to know if there exists a simpler solution to make my life a little bit easier. :)

check http://stackoverflow.com/questions/665135/find-the-last-element-of-an-array-while-using-a-foreach-loop-in-php and http://stackoverflow.com/questions/1070244/how-to-determine-the-first-and-last-iteration-in-a-foreach-loop — Saty, Jun 08 '16 at 09:13
I checked and they're using the solution with $i variable or the (generally) wrong solution with `end()` function - as @nospor mentioned. — sukovanej, Jun 08 '16 at 09:24

score 10 · Answer 1 · answered Jun 08 '16 at 09:12

10

Use this within your foreach for checking if the item is the last item.

if ($item === end($myArray)) {
    // Last item
}

For checking if the item is the first item

if ($item === reset($myArray)) {
    // First item
}

answered Jun 08 '16 at 09:12

phreakv6

2,135
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11

3

So look at this example: array with values: 2,4,5,2 - your code will return true for first element because first and last has the same value – nospor Jun 08 '16 at 09:13
Ah yes, true. If the array is known to have non-unique values, this will work. – phreakv6 Jun 08 '16 at 09:19
Worked, thanks phreakv6 :D – Periklis Kakarakidis Dec 30 '21 at 06:57

Dhara Parmar · Answer 2 · 2016-06-08T09:33:00.417

0

You find the last item by checking if ($item === end($myArray)) {}

foreach($myArray as $key => $item) {
   echo $item."<br />";
   end($myArray);
   if ($key === key($myArray)) {
      echo 'LAST ELEMENT!';
   }
}

edited Jun 08 '16 at 09:33

answered Jun 08 '16 at 09:09

Dhara Parmar

8,021
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$myArray = array("aa","bb","cc","dd"); - define array like this – Dhara Parmar Jun 08 '16 at 09:14
This code also is not properly, eg for arrays: [1,0,false,2,3,4] – nospor Jun 08 '16 at 09:19
1

Fixing to end is also not wright for arrays: [1,2,3,4,1] – nospor Jun 08 '16 at 09:20
And you have also PARSE ERROR now because you forgot about { – nospor Jun 08 '16 at 09:21
@RiggsFolly it will be wrong for every array which contains duplicated data with last element – nospor Jun 08 '16 at 09:32
`end($myArray);` and `key($myArray);` should be before loop. There is no point to check it every time in loop – nospor Jun 08 '16 at 09:35

PHP - effective way to determine last loop in foreach

2 Answers2