Php array key value swap

W3Schools offers a wide range of services and products for beginners and professionals, helping millions of people everyday to learn and master new skills. Create your own website with W3Schools Spaces - no setup required.

Note that the values of array need to be valid keys, i. If a value has several occurrences, the latest key will be used as its value, and all others will be lost. Submit a Pull Request Report a Bug. Return Values Returns the flipped array. I find this function vey useful when you have a big array and you want to know if a given value is in the array. But of course everything works as expected. Just a head's up for the paranoid.

Php array key value swap

Skip to content. Change Language. Open In App. Related Articles. Solve Coding Problems. Improve Improve. Like Article Like. Save Article Save. Report issue Report. This built-in function of PHP is used to exchange elements within an array, i. We must remember that the values of the array need to be valid keys, i. Return Type: This function returns another array, with the elements exchanged or flipped, it returns null if the input array is invalid. Last Updated : 20 Jun, Like Article.

Arrays from which elements will be extracted. Codex Engineering PHP.

If a key from the first array exists in the second array, its value will be replaced by the value from the second array. If the key exists in the second array, and not the first, it will be created in the first array. If a key only exists in the first array, it will be left as is. If several arrays are passed for replacement, they will be processed in order, the later arrays overwriting the previous values. Arrays from which elements will be extracted. Values from later arrays overwrite the previous values.

This article demonstrates a PHP function which can be used for swapping of keys with values in an array. This function returns an array with flipped values. Firefox and Microsoft Internet Explorer are recommended browsers for websites using java applets. All rights reserved. Ask Tech Query Post Blogs. Nerd Digest Users. Most Viewed Most Recent Your account has been flagged due to frequent spamming, you are not permitted to post comments. Contact admin findnerd. Negative Vote.

Php array key value swap

If a key from the first array exists in the second array, its value will be replaced by the value from the second array. If the key exists in the second array, and not the first, it will be created in the first array. If a key only exists in the first array, it will be left as is. If several arrays are passed for replacement, they will be processed in order, the later arrays overwriting the previous values. Arrays from which elements will be extracted. Values from later arrays overwrite the previous values.

Helmet heroes scammer

Save Article. Check out this example. Note that the values of array need to be valid keys, i. Backend Learn Python Tutorial Reference. Like Article. Let's look at an example:. If a key only exists in the first array, it will be left as is. While using W3Schools, you agree to have read and accepted our terms of use , cookie and privacy policy. Easy Normal Medium Hard Expert. All Our Services. Don't use this function for filtering or searching an array - PHP already has functions for exactly those purposes.

W3Schools offers a wide range of services and products for beginners and professionals, helping millions of people everyday to learn and master new skills.

Explore offer now. With PHP 5. PHP imagecreatetruecolor Function. Solve Coding Problems. Trending in News. The values of first array will not be modified in the result array. If a value has several occurrences, the latest key will be used as its value, and all others will be lost. Complete Tutorials. To get exactly same result like in PHP 5. Browser Statistics Read long term trends of browser usage. If you don't want to lose duplicates, and you're ok, with having the values in the flipped array in an array as well, you may use this: PHP 7. Chinmoy Lenka. Campus Experiences. While using W3Schools, you agree to have read and accepted our terms of use , cookie and privacy policy. Codex Engineering PHP.