How to create a multidimensional array in PHP? krsort(): sorts an associative array in descending order, according to the key.ksort(): sorts an associative array in ascending order, according to the key.arsort(): sorts an associative array in descending order, according to the value.asort(): sorts an associative array in ascending order, according to the value.rsort(): sorts the values of an array in descending order.sort(): sorts the values of an array in ascending order.The following are some of the functions you can use to sort arrays: Sorting is a common operation when working with arrays in PHP. You can then use these variables to perform some action for each element of the array. $key and $value are variables that will hold the key and value of the current element of the array, respectively. In the above code, $array is the name of the array you want to loop through. $fruits = array ( 'apple', 'orange', 'banana', 'grape' ) if ( in_array ( 'apple', $fruits ) ) Using the unset() function, you can remove a specific element of an indexed or associative PHP array by specifying its index or key respectively. You can remove elements from an existing PHP array using the unset() function or the array_splice() function. How do I remove elements from an existing PHP Array?

In this code snippet, we have added two new elements ( banana and grape) to the existing $fruits array using the array_push().Īlternatively, you can use square brackets notation by assigning a value to a new index position in an indexed array or setting a new key–value pair for associative arrays.įor example, to add element to indexed arrays, $num_array = 67 will add the value 67 at the end of the $num_array.Īs an example of adding an element to an associative array, $user_data = 'United States' will add a new key–value pair to the $user_data array. $fruits = array ( 'apple', 'orange' ) array_push ( $fruits, 'banana', 'grape' ) print_r ( $fruits ) // Output: Array ( => apple => orange => banana => grape)

Php associative array get index not key