Shulou(Shulou.com)06/01 Report--

This article focuses on "how to determine whether php is an associative array or an indexed array". Interested friends may wish to take a look. The method introduced in this paper is simple, fast and practical. Let's let the editor take you to learn how php determines whether it is an associative array or an indexed array.

Judgment method: 1, use array_values () to convert the specified array into an index array; 2, use array_diff_key () to compare the key names of the original array and the index array, and return a difference array; 3, use empty () to determine whether the difference array is an empty array, if so, the original array is an index array, and vice versa.

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

Php's method of determining whether an associative array or an indexed array is:

Realize the idea:

Use the array_values () function to get all the key values of the specified array and convert them to an indexed array

Use the array_diff_key () function to compare the key names of the converted indexed array with the original array and return the subtractive array

Use empty () to determine whether the difference array is an empty array, and if the difference array is empty, the original array is an indexed array, otherwise it is an associative array.

Implementation code:

Description:

The array_values () function can get the values of all elements in an array; this function is especially suitable for arrays where the subscripts of the elements are confused, or for converting associative arrays into indexed arrays.

The array_diff_key () function compares the key names of two (or more) arrays and returns an array of subtractions.

If the difference array is an empty array, two (or more) arrays have the same key name.

At this point, I believe you have a deeper understanding of "how to determine whether php is an associative array or an indexed array". You might as well do it in practice. Here is the website, more related content can enter the relevant channels to inquire, follow us, continue to learn!

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.