PHP ITERABLES
- An iterable is any value which can be looped through with a foreach() loop.
- The iterable pseudo-type was introduced in PHP 7.1, and it can be used as a data type for function arguments and function return values.
- The iterable keyword can be used as a data type of a function argument or as the return type of a function.
- An iterable is any value which can be looped through with a foreach() loop.
EXAMPLES FOR ITERABLES IN PHP :
- lists
- tuples
- strings
SYNTAX FOR ITERABLES IN PHP :
function is_iterable($var)
{
return (is_array($var) || $var instanceof Traversable || $var instanceof stdClass);
}
EXAMPLE PROGRAM FOR ITERABLES IN PHP :
<?php
function printIterable ( Iterable $myIterable ){
foreach($myIterable as $item) {
echo $item;
}
}
$arr = ["a", "b", "c"];
printIterable ($arr);
?>
OUTPUT :
abc
