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Most people do not understand the knowledge points of this article "how to traverse a multi-dimensional array in php", so the editor summarizes the following, detailed contents, clear steps, and a certain reference value. I hope you can get something after reading this article. Let's take a look at this "how to traverse a multi-dimensional array in php" article.

1. Concept

A multidimensional array is an array that contains one or more arrays.

A multidimensional array of two, three, four, or five or more levels.

A two-digit array requires two indexes to select elements.

A three-dimensional array requires three indexes to select elements.

two。 Be careful

(1) No matter how complex the array is, the outermost array array () must be followed by a semicolon!

(2) if there are several juxtaposed elements at the same level, all elements must be added a comma at the end except for the last element of the array.

3. Traversing an instance

Function arr_fun ($arr) {if (is_array ($arr)) {foreach ($arr as $v) {if (is_array ($v)) {arr_fun ($v);} else {echo $v. "

";} else {echo $arr."

";}} above is the content of this article on" how to traverse multidimensional arrays in php ". I believe we all have some understanding. I hope the content shared by the editor will be helpful to you. If you want to know more related knowledge, please follow the industry information channel.

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