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.

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.

Php array key value swap

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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. Like Article. Change Language.

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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.

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. Returns an array. Submit a Pull Request Report a Bug. Parameters array The array in which elements are replaced. Return Values Returns an array.

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Trending in News. Check out this example. Refer to the PHP official documentation for further details on this function. You will be notified via email once the article is available for improvement. Change Language. It's a useful tool for reorganizing data structures or finding specific keys based on their values. Finding the Key for a Specific Value Imagine you have an array of user roles, and you want to find the key for a specific role. Article Tags :. JavaScript Programming Examples. If the key exists in the second array, and not the first, it will be created in the first array. Variables Variables Scope. Exercises Test your skills with different exercises. Engineering Exam Experiences. W3Schools is Powered by W3.

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.

I saw solutions that iterate! The following should be O n instead of O n log n. Related Articles. Copyright by Refsnes Data. Finding the Key for a Specific Value Imagine you have an array of user roles, and you want to find the key for a specific role. Examples might be simplified to improve reading and learning. Save Article. This article is being improved by another user right now. Tutorials, references, and examples are constantly reviewed to avoid errors, but we cannot warrant full correctness of all content. With PHP 5. Return Values Returns the flipped array. This built-in function of PHP is used to exchange elements within an array, i.