1.2.500. Getting Last Element¶
Getting the last element of an array relies on array_key_last().
array_key_last() was added in PHP 7.3. Before that, other ways had to be used, such as reaching the count() - 1 elements, or via array_pop(`array_keys()) <https://www.php.net/array_keys>`_.
<?php
$array = ['a' => 1, 'b' => 2, 'c' => 3];
// Best solutions, by far
$last = $array[array_key_last($array)];
// Best solutions, just as fast as each other
$last = $array[count($array) - 1];
$last = end($array);
// Bad solutions
// popping, but restoring the value.
$last = array_pop($array);
$array[] = $last;
// array_unshift would be even worse
// reversing array
$last = array_reverse($array)[0];
// slicing the array
$last = array_slice($array, -1)[0]',
$last = current(array_slice($array, -1));
);
?>
1.2.500.1. Suggestions¶
Use PHP native function : array_key_last(), when using PHP 7.4 and later
Use PHP native function : array_pop()
Organise the code to put the last element in the first position (array_unshift() instead of append operator [])
1.2.500.2. Specs¶
Short name |
Arrays/GettingLastElement |
Rulesets |
|
Exakat since |
0.9.0 |
PHP Version |
All |
Severity |
Minor |
Time To Fix |
Instant (5 mins) |
Precision |
High |
Features |
array |
Examples |
|
Available in |