How to delete the last few elements of an array in php

In PHP, you can use the "array_splice()" function to delete the last few elements of the array. This function is used to delete the specified elements in the array. Just set the parameter "start" to a negative number to remove the elements from the array. Delete the specified number of elements from the end, the syntax is "array_splice(array, start, number of elements)".

The operating environment of this tutorial: windows7 system, PHP7.1 version, DELL G3 computer

How to delete an array in php The last few elements

You can use the array_splice() function to delete the last few elements of the array. The array_splice() function removes the selected element from the array and replaces it with the new element. . This function will also return the array containing the removed elements.

Tip: If the function does not remove any elements (length=0), the replaced array will be inserted from the position of the start parameter (see Example 2).

Note: The key names in the replaced array are not retained.

The syntax of this function is as follows:

array_splice(array,start,length,array)

What needs to be noted is:

Let’s take an example to see how to delete an array. The last few elements of the array, the example is as follows:

Delete the last two elements of the array

<?php
$a1=array("a"=>"red","b"=>"green","c"=>"blue","d"=>"yellow");
array_splice($a1,-2,2);
print_r($a1);
?>

Output result:

Delete the last three elements of the array Bit element

<?php
$a1=array("a"=>"red","b"=>"green","c"=>"blue","d"=>"yellow");
array_splice($a1,-3,3);
print_r($a1);
?>

Output result:

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