PHP Array foreach

In this PHP tutorial, you shall learn to use foreach statement wit array to execute a block of statements for each element in the array, with examples.

PHP Array foreach

In PHP, foreach is a construct that allows to iterate over arrays easily.

We shall go through the following scenarios, with programs.

1. Iterate over array of numbers using foreach.
2. Iterate over key-value pairs of associative array using foreach.
3. Iterate over only values of PHP array with key-value pairs using foreach.

Syntax

The syntax of foreach statement to iterate over the items in an array $arr is

foreach ($array as $value) {
    //statement(s)
}

Using this syntax, you can iterate over arrays containing just the values as elements, or iterate only over values of an array with key-value pairs.

If you would like to access both key and value of key-value pairs in array with foreach, use the following syntax.

foreach ($arr as $key => $value) {
    //statement(s)
}

Now, you can access both key and value using $key and $value variables respectively.

Examples 3

1 Iterate over Array of Integers using foreach

In the following program, we take an array of integers and iterate over the elements using foreach loop.

PHP Program

<?php
$arr = array( 41, 96, 65 );

foreach ($arr as $value) {
    echo $value;
    echo '<br>';
}
?>

Output

2 Iterate over key-value pairs of array using foreach

In the following program, we take an array of integers and iterate over the elements using foreach loop.

PHP Program

<?php
$arr = array(
    "a" => 41,
    "b" => 96,
    "c" => 65
);

foreach ($arr as $key => $value) {
    echo $key . ' - ' . $value;
    echo '<br>';
}
?>

Output

3 Iterate over Values of Associative Array

In the following program, we take an array of key-value pairs and iterate over only values using foreach loop.

PHP Program

<?php
$arr = array(
    "a" => 41,
    "b" => 96,
    "c" => 65
);

foreach ($arr as $value) {
    echo $value;
    echo '<br>';
}
?>

Output

Conclusion

In this PHP Tutorial, we learned the syntax of foreach in PHP, and how to use foreach to iterate over the elements of an array.