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PHP foreach loop

The foreach loop is used to traverse the array elements. It works only on array and object. It will issue an error if you try to use it with the variables of different datatype.

The foreach loop works on elements basis rather than index. It provides an easiest way to iterate the elements of an array.

In foreach loop, we don't need to increment the value.

Syntax

foreach ($array as $value) {
	//code to be executed
}

There is one more syntax of foreach loop.

Syntax

foreach ($array as $key => $element) { 
	//code to be executed
}

Flowchart

Example 1:

PHP program to print array elements using foreach loop.

<?php
	//declare array
	$season = array ("Summer", "Winter", "Autumn", "Rainy");
	
	//access array elements using foreach loop
	foreach ($season as $element) {
		echo "$element";
		echo "</br>";
	}
?>

Output:

Summer 
Winter 
Autumn 
Rainy

Example 2:

PHP program to print associative array elements using foreach loop.

<?php
	//declare array
	$employee = array (
		"Name" => "Alex",
		"Email" => "alex_jtp@gmail.com",
		"Age" => 21,
		"Gender" => "Male"
	);
	
	//display associative array element through foreach loop
	foreach ($employee as $key => $element) {
		echo $key . " : " . $element;
		echo "</br>";	
	}
?>

Output:

Name : Alex
Email : [email protected]
Age : 21
Gender : Male

Example 3:

Multi-dimensional array

<?php
	//declare multi-dimensional array
	$a = array();
	$a[0][0] = "Alex";
	$a[0][1] = "Bob";
	$a[1][0] = "Camila";
	$a[1][1] = "Denial";
	
	//display multi-dimensional array elements through foreach loop
	foreach ($a as $e1) {
		foreach ($e1 as $e2) {
			echo "$e2\n";
		}
	}
?>

Output:

Alex Bob Camila Denial

Example 4:

Dynamic array

<?php
	//dynamic array
	foreach (array ('j', 'a', 'v', 'a', 't', 'p', 'o', 'i', 'n', 't') as $elements) {
		echo "$elements\n";
	}
?>

Output:

j a v a t p o i n t

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PHP foreach loop

Syntax

Syntax

Flowchart

Example 1:

Example 2:

Example 3:

Example 4:

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