This now allows you to build a UL menu with unlimited items. I've removed all the links from the outputs above. We don't need to update the function since its recursive. Now lets add more items to the array: $links = [ Heres how to add elements to an empty array in PHP: First, create an empty array: cart array() To add elements to the array, you can use either. Since an array is merely a container for data, any time you try to print out a variable with an array assigned to it without referencing a particular element, PHP outputs Array. = $this->buildList($item) Ĭheck if the array item contains a children key, if it does then pass the children segment to the same function, this is a recursive function so it can call this as many times as the children key exists. When this script is run, you will see that the only output is Array. This is the difference between foreach and for loops, which store the item's index, not the item itself. Now update the function to handle children: function buildList(array $array): string Its usage is as follows: foreach ( collection as element) Foreach iterates over array items and stores the current item in a variable. 'url' => 'introduction/application-register', If PHP reaches the last element, the loop ends. Add a children array, this will contain its own array keys for each item: $links = [ In each iteration, PHP assigns the next array element to the element variable. To print the menu: Usage echo buildList($links) Loop over the array, for each item print out an LI link. For example, you can use a for loop to iterate through a range of values and add them to the array. ![]() Define a $menu string this will hold the ul items. One way is to use a loop to add elements to the array. BuildList FunctionĬreating a function to build the UL menu. This contains 2 links, both would be top level. In fact, it should support an unlimited number of child links. The array should support top-level as well as child links. We have explained most of them here but if you have more code examples and techniques in order to do that, you can also contribute here.Take an array and build a menu UL list from it. These were some methods that can be used to iterate over an array of objects in PHP. The while loop will continue until the variable $i is no longer less than the number of students in the array (count($students)). The code above creates an array of student information, then uses a while loop to print each student's name. ![]() While loop will iterate through each element of the array. While loop can be used to loop through an array of objects. Use While loop to loop through an array of object The code above creates an array of student information, then uses a for loop to iterate through the array and print out each student's name. This can be useful when you need to perform an action on each object in the Array, such as displaying data from the object or calling a function that uses data from the object. Here we will describe how to use a For loop to iterate through an array of objects. Loop through Array of Objects using For loop This loop will iterate through each element in the $students array and print out the id, name, and department for each student. Right off the bat, this is a very special keyword in PHP (and many languages), and even though you’ve got an underscore, my brain can’t unsee this. The code above is an example of a foreach loop. 1 1 1 I’ll be honest, trying to just read this code is very hard for me, let alone figuring out what it does in order to attempt to help you. This is a common operation in PHP when working with arrays of data.Ĭode example 1, "name" => "John", "department" => "Science" ], ![]() The below PHP code example shows how to loop through an array of objects using the foreach loop.
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