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PHP Quiz PHP CertificatePHP each() Function
Complete PHP Array Reference
Definition and Usage
The each() function returns the current element key and value, and moves the internal pointer forward.
This element key an value is returned in an array with four elements. Two elements (1 and Value) for the element value, and two elements (0 and Key) for the element key.
This function returns FALSE if there are no more array elements.
Syntax
each(array)
| Parameter | Description |
|---|---|
| array | Required. Specifies the array to use |
Tips and Notes
Note: This function returns FALSE on empty elements or elements with no value.
Example 1
<?php
$people = array("Peter", "Joe", "Glenn", "Cleveland");
print_r (each($people));
?>
$people = array("Peter", "Joe", "Glenn", "Cleveland");
print_r (each($people));
?>
The output of the code above will be:
Array ( [1] => Peter [value] => Peter [0] => 0 [key] => 0 )
Example 2
Same example as above, but with a loop to output the whole array:
<?php
$people = array("Peter", "Joe", "Glenn", "Cleveland");
reset($people);
while (list($key, $val) = each($people))
{
echo "$key => $val<br />";
}
?>
$people = array("Peter", "Joe", "Glenn", "Cleveland");
reset($people);
while (list($key, $val) = each($people))
{
echo "$key => $val<br />";
}
?>
The output of the code above will be:
0 => Peter
1 => Joe
2 => Glenn
3 => Cleveland
1 => Joe
2 => Glenn
3 => Cleveland
Complete PHP Array Reference
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