Php recursive loop through multidimensional array

It returns the resulting array.

Applies the user-defined callback function to each element of the array. This function will recurse into deeper arrays. Typically, callback takes on two parameters. Note : If callback needs to be working with the actual values of the array, specify the first parameter of callback as a reference. Then, any changes made to those elements will be made in the original array itself. If the optional arg parameter is supplied, it will be passed as the third parameter to the callback. Returns true on success or false on failure.

Php recursive loop through multidimensional array

Recently I found myself in a situation where I needed to search and remove a value from a dynamically generated multidimensional array with a different size and length. After many trials and errors, I found that the best solution is to recursively loop through the array and locate and remove the value. First thing we're doing is checking if the array passed to the function is actually an array. If array passed is an array, we iterate through its elements. I wrote this piece of code during work, to search and remove elements from a dynamically generated multidimensional array. Recursion can be a life saver in many cases, hopefully my code will help you if you ever find yourself in the same situation as mine. Sign in Email. Forgot your password? Search within: Articles Quick Answers Messages. Recursively searching and removing a value from a multidimensional array in PHP.

I have another question now. Useful for merging configurations or merging json data to be saved in database my case Similar to Object.

I'm completly lost after wasting like 10hours on this. I don't know how to proceed, and my website not made by me initially process all smarty through php, so it never includes a smarty file directly in a template And can you show me an example? Going into recursing, the level is incremented, and having come out from recursing, the level is decremented. Also note that this is actually what was suggested earlier -- the template file. Now I can analyse your code! But it appears you need it.

This iterator allows for unsetting and modifying values and keys while iterating over arrays and objects, in the same way as the ArrayIterator. Additionally, it is possible to iterate over the current iterator entry. RecursiveArrayIterator::getChildren ». Submit a Pull Request Report a Bug. If you are iterating over a multi-dimensional array of objects, you may be tempted to use a RecursiveArrayIterator within a RecursiveIteratorIterator. You are likely to get baffling results if you do.

Php recursive loop through multidimensional array

Buckle up, fellow PHP enthusiast! We're loading up the rocket fuel for your coding adventures I have read the PHP documentation, but I'm still a bit confused about how exactly it works. I would appreciate it if someone could provide me with an example and explain how to use it effectively in my code. To provide some context, I am developing a web application that involves working with multidimensional arrays.

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Etienne Rached Mar If a value in the left one is an array and also an array in the right one, the function calls itself recursion. Returning null! If you are iterating over a multi-dimensional array of objects, you may be tempted to use a RecursiveArrayIterator within a RecursiveIteratorIterator. Forgot your password? Save yourself hours of frustration by reading on. That is because RecursiveArrayIterator treats all objects as having children, and tries to recurse into them. Return Values An array of values resulted from merging the arguments together. Both instances are handled by the following function which I modified from omega13a at sbcglobal dot net. This is a simple example that lacks any DB calls and looping. Thought someone else might find it usefull. Return Values Returns true on success or false on failure. This iterator allows for unsetting and modifying values and keys while iterating over arrays and objects, in the same way as the ArrayIterator.

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.

Unfortunately the PHP example given doesn't do this. If, however, the arrays have the same numeric key, the later value will not overwrite the original value, but will be appended. Thought someone else might find it usefull. It works as documented above. You may notice that the key ' sweet ' is never displayed. Sometimes you need to modify an array with another one here is my approach to replace an array's content recursively with delete opiton. If a value exists in array2 that is not found in array1, add it to array1. Layout: fixed fluid. RecursiveArrayIterator::getChildren ». I'm completly lost after wasting like 10hours on this. Instead, we can use PHP 5. So I wrote the below function, which merges two arrays, and returns the resulting array. Note : If callback needs to be working with the actual values of the array, specify the first parameter of callback as a reference. Recursion can be a life saver in many cases, hopefully my code will help you if you ever find yourself in the same situation as mine. I would merge 2 arrays but keep the values unique in the result array.