Core PHP: The foreach Loop (5.10)

The foreach Loop

The foreach loop works only on arrays, and is used to loop through each key/value pair in an array.

There are two syntaxes:

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

The first form loops over the array. On each iteration, the value of the current element is assigned to $value, and the array pointer is moved by one, until it reaches the last array element.
The second form will additionally assign the current element's key to the $key variable on each iteration.

The following example demonstrates a loop that outputs the values of the $names array.

$names = array("John", "David", "Amy");
foreach ($names as $name) {
   echo $name.'<br />';
}

// John
// David
// Amy