PHP Array foreach loop
Description
foreach is a special kind of looping statement that works only on arrays and objects.
foreach can be used in two ways.
- retrieve just the value of each element, or
- retrieve the element's key and value.
Syntax to get value
Use foreach to retrieve each element's value, as follows:
foreach ( $array as $value ) { /*ww w .ja v a 2s . c o m*/
// (do something with $value here)
}
// (rest of script here)
Syntax to get key and value
To use foreach to retrieve both keys and values, use the following syntax:
foreach ( $array as $key => $value ) {
// (do something with $key and/or $value here
} //from w w w . j a va 2 s . c o m
// (rest of script here)
Example 1
Use foreach loop to get value
<?PHP// w ww . j ava2 s . c o m
$authors = array( "Java", "PHP", "CSS", "HTML" );
foreach ( $authors as $val ) {
echo $val . "\n";
}
?>
The code above generates the following result.
Example 2
Use foreach to loop through associate array
<?php //from www. ja v a 2 s . c o m
$myBook = array( "title" => "Learn PHP from java2s.com",
"author" => "java2s.com",
"pubYear" => 2000 );
foreach ( $myBook as $key => $value ) {
echo "$key \n";
echo "$value \n";
}
?>
The code above generates the following result.
