How to delete things other than numbers in an array in php

php method to delete things other than array numbers: 1. Create a new php file; 2. Create an array; 3. Use foreach to traverse the array elements and use the is_numeric function to determine whether the numeric element is a number; 4. Output Just delete the array after non-numeric elements.

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

How to delete things other than array numbers in php ?

Create a new PHP file named test.php to explain how PHP deletes non-numeric elements in an array.

In the test.php file, use the header() method to set the encoding format of the page to utf-8.

In the test.php file, create an array for testing.

In the test.php file, use foreach to traverse the array elements, use the is_numeric function to determine whether the numeric element is a number, invert the result of the determination, and use if to make the determination. , that is, if it is a non-numeric element, use the unset function to delete the currently traversed element.

In the test.php file, use print_r to output the array after removing non-numeric elements.

Open the test.php file in the browser to view the results.

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