foreach

The foreach loop in PHP allows you to iterate over the elements of an array and execute a block of code for each element.

Here is the general syntax for a foreach loop in PHP:

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

You can also specify the key of each element in the array by using the following syntax:

foreach ($array as $key => $value) {
   code to be executed;
}

Here is an example of a foreach loop that iterates over an array of numbers and prints each element:

$numbers = array(1, 2, 3, 4, 5);
foreach ($numbers as $number) {
   echo "$number ";
}

In this example, the foreach loop will iterate over the elements of the $numbers array, assigning each element to the $number variable in turn and executing the code inside the loop. The code inside the loop will print the value of $number on each iteration.

Here is an example of a foreach loop that iterates over an associative array and prints each key and value:

$students = array(
   "student1" => "John",
   "student2" => "Jane",
   "student3" => "Bob"
);
foreach ($students as $student_id => $name) {
   echo "Student ID: $student_id, Name: $name <br>";
}

In this example, the foreach loop will iterate over the elements of the $students array, assigning the key of each element to the $student_id variable and the value of each element to the $name variable, and executing the code inside the loop. The code inside the loop will print the value of $student_id and $name on each iteration.