Home > Article > Backend Development > How to flip array in php
In PHP, you can use the array_reverse() function to reverse the array. This function will reverse the order of the elements in the original array, create a new array and return it; the syntax is "array_reverse(array,preserve)".
The operating environment of this tutorial: windows7 system, PHP7.1 version, DELL G3 computer
In php, you can use array_reverse () function performs array flipping.
array_reverse() function returns an array in reverse element order. This function reverses the order of elements in the original array, creates a new array and returns it.
Syntax:
array_reverse(array,preserve)
preserve: Optional. Specifies whether to retain the original array key names. If true is specified, the element's key name remains unchanged, otherwise the key name is lost.
Example:
Return the original array, flip the array:
<?php $a=array("Volvo","XC90",array("BMW","Toyota")); $reverse=array_reverse($a); var_dump($a); var_dump($reverse); ?>
Return the original array key name retained Flip array
<?php $a=array("Volvo","XC90",array("BMW","Toyota")); $preserve=array_reverse($a,true); var_dump($preserve); ?>
Recommended learning: "PHP Video Tutorial"
The above is the detailed content of How to flip array in php. For more information, please follow other related articles on the PHP Chinese website!