Php combine arrays

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Creates an array by using the values from the keys array as keys and the values from the values array as the corresponding values. Illegal values for key will be converted to string. Array of values to be used. Returns the combined array. As of PHP 8. Prior to PHP 8.

Php combine arrays

It returns the resulting array. If the input arrays have the same string keys, then the values for these keys are merged together into an array, and this is done recursively, so that if one of the values is an array itself, the function will merge it with a corresponding entry in another array too. If, however, the arrays have the same numeric key, the later value will not overwrite the original value, but will be appended. An array of values resulted from merging the arguments together. If called without any arguments, returns an empty array. Version Description 7. Formerly, at least one parameter has been required. Submit a Pull Request Report a Bug. Parameters arrays Variable list of arrays to recursively merge. Return Values An array of values resulted from merging the arguments together. Changelog Version Description 7. This is a simple, three line approach.

Copyright by Refsnes Data. Changelog Version Description 7. Arrays with mixed key types do not change anything about the rules explained above.

Appending or merging is a common array operation. And since arrays are used everywhere in PHP, you cannot afford not to know how to do it properly. But why would it be so hard? It's not always clear, which one to use. Arrays in PHP are actually ordered maps. We use and think about them as normal arrays and associative arrays.

Both functions are array based functions used to combine two or more arrays using PHP. We will see each function with syntax and implementation. The arrays are appended at the end of the first array. Skip to content. Change Language. Open In App. Related Articles. Solve Coding Problems. How to display text with a PHP script? How to find the index of an element in an array using PHP?

Php combine arrays

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The values of one array are appended to the end of the previous array during the merging process. Strings which contain an integer will also be renumbered! W3Schools offers a wide range of services and products for beginners and professionals, helping millions of people everyday to learn and master new skills. You know how it works, it just turns it into an array with multiple values Quizzes Test yourself with multiple choice questions. Short description: If one of the Arguments isn't an Array, first Argument is returned. Awesome Sponsors Become a Sponsor. In this version the values are overwritten only if they are not an array. Now, consider a situation wherein the second array, the same string key is present. Arrays in PHP are actually ordered maps. An array of values resulted from merging the arguments together. The differences are subtle and I often forget them. There are possibilities where a numeric key is actually a string '' For that I modified the function so that the last argument is a true switch to turn keys can be numeric on. It takes two arrays as input and merges them. My Learning Track your learning progress at W3Schools and collect rewards.

You may give the function a single array or as many as you like. Notice that if the keys of two or more array elements are the same, the last one takes precedence.

When two elements have the same string key, the latter value takes precedence. Here i used "::delete::" as reserved word to delete items. I needed a function that would take keys from one unequal array and combine them with the values of another. If using element position 2, one could create the fictitious 'pete johnson' because of the collapsing of elements. Don't forget that numeric keys will be renumbered! Return Value: It returns a new array containing the elements of all arrays passed in as parameters, with the values of one array appended to the end of the previous array. Exercises Test your skills with different exercises. In a multidimensional array, the index will be assigned in increment order and will be appended after the parent array. Use full if you don't want to walk an entire array and the keys through the same callback. Here, we can pass as many arrays as arguments as possible and the expected output will always be an array. Well, it looks weird right. Anyways, my function hasn't been tested extensively, but it's a simple function, so in hopes that this might be useful to someone else I'm sharing. Variables Variables Scope.