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The array_map() function sends each value of an array to a user-made function, and returns an array with new values, given by the user-made function. Tip: You can assign one array to the function, or as many as you like.…

The array_keys() function returns an array containing the keys. Note: If the optional search_key_value is specified, then only the keys for that value are returned. Otherwise, all the keys from the array are returned. Parameter Description array Required. Specifies an…

The array_key_exists() function is used to check whether a specified key is present in an array or not. The function returns TRUE if the given key is set in the array. The key can be any value possible for an…

The array_intersect_ukey() function compares the keys of two (or more) arrays, and returns the matches. The array_intersect_ukey() function compares the keys in two or more arrays, checking for matches, before comparing the keys in a user-defined function, then returns an…

The array_intersect_uassoc() function compares the keys and values of two (or more) arrays, and returns the matches. The comparison function returns an integer less than, equal to, or greater than zero if the first argument is considered to be respectively…

The array_intersect_key() is used to create an array containing keys and values of the first array whose keys (i.e. from the first array) are present in all other arrays. This function compares the keys of two or more arrays, and…

The array_intersect_assoc() is used to create an array containing keys and values of the first array whose values (i.e. from the first array) are present in all other arrays, while index of values is same for all the given arrays.…

The array_intersect() function compares the values of two (or more) arrays, and returns the matches. This function compares the values of two or more arrays, and return an array that contains the entries from array1 that are present in array2,…

The array_flip() function is used to exchange the keys with their associated values in an array. The function returns an array in flip order, i.e. keys from array become values and values from array become keys. Note: The values of…

The array_filter() function passes each value of a given array to a user defined function. If the user defined function allows, the current value from the array is returned into the result array. Note: The function Iterates over each value…