PHP FOR Loops: How to Use the FOR Loop in PHP

The PHP FOR loop is one of the most important functions in PHP programming. If you’ve ever written a FOR loop in JavaScript, C, or Python, it will look very similar. And once you know the basics of the PHP FOR loop, you’ll also be able to learn the FOR loop very easily in other languages.

What is a PHP FOR Loop?

The first thing you should know about the FOR loop is that it’s one of the most common PHP interview questions. Not only should you know the basics of FOR loops, but you should be practiced enough to program one on the fly.

Let’s start with the syntax of the FOR loop. If you’ve never seen a FOR loop before, this is going to appear overwhelming. But we will break it down into simple components.

	for([starting_condition]; [continue_condition]; [ending_condition]) {
		[code_block]
	}

The above parameters of the FOR loop, as described, are:

• Starting condition. An expression of code that starts when the for loop is first initiated, but never again.
• Continue condition. A condition evaluated each time the loop runs. If this returns true, the execution continues. If this returns false, the execution stops.
• Ending condition. An expression of code that runs at the end of each loop.
• Code block. The code that runs as each loop iteration is completed. 

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