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

This article mainly introduces "php how to turn index array into associative array", in daily operation, I believe many people in php how to turn index array into associative array problems have doubts, Xiaobian consulted all kinds of information, sorted out simple and easy to use operation method, hope to answer "php how to turn index array into associative array" doubts helpful! Next, please follow the small series to learn together!

In php, you can use the array_combine() function to convert an index array into an associative array, with the syntax "array_combine(array containing keys, index array)"; where the number of elements in the key array and index array must be the same, in order for the key name and index array element values to correspond one by one.

Operating environment of this tutorial: Windows 7 system, PHP7.1 version, DELL G3 computer

In php, you can use the array_combine() function to convert an indexed array into an associative array.

Examples:

There is such an index array:

array (size=4) 0 => string 'red' (length=3) 1 => string 'green' (length=5) 2 => string 'blue' (length=4) 3 => string 'yellow' (length=6)

To convert it to associative array:

array (size=4) 'a' => string 'red' (length=3) 'b' => string 'green' (length=5) 'c' => string 'blue' (length=4) 'd' => string 'yellow' (length=6)

We can use the array_combine() function and an array containing elements "a,""b,""c," and "d":

array("a","b","c","d");

Implementation code:

Description:

The array_combine($keys,$values) function creates a new array by combining two arrays, where the elements of the $keys array are the keys of the new array and the elements of the $values array are the keys of the new array.

However, it should be noted that when using the array_combine() function to create an array, the number of elements in the $keys array and the $values array must be the same, so that the key names and key values correspond one by one, otherwise an error will be reported and FALSE will be returned.

And the $keys array cannot be a multidimensional array, otherwise an error will be reported; but the $values array can be a multidimensional array.

At this point, on "php how to turn index array into associative array" learning is over, I hope to solve everyone's doubts. Theory and practice can better match to help everyone learn, go and try it! If you want to continue learning more relevant knowledge, please continue to pay attention to the website, Xiaobian will continue to strive to bring more practical articles for everyone!

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.