spl_object_hash
Another fine Iterator from php . You can use it especially when you have to iterate over objects
<?php
$fruits = array(
"apple" => "yummy",
"orange" => "ah ya, nice",
"grape" => "wow, I love it!",
"plum" => "nah, not me"
);
$obj = new ArrayObject( $fruits );
$it = $obj->getIterator();
// How many items are we iterating over?
echo "Iterating over: " . $obj->count() . " values\n";
// Iterate over the values in the ArrayObject:
while( $it->valid() )
{
echo $it->key() . "=" . $it->current() . "\n";
$it->next();
}
// The good thing here is that it can be iterated with foreach loop
foreach ($it as $key=>$val)
echo $key.":".$val."\n";
/* Outputs something like */
Iterating over: 4 values
apple=yummy
orange=ah ya, nice
grape=wow, I love it!
plum=nah, not me
?>
Regards.
The ArrayIterator class
Introduzione
This iterator allows to unset and modify values and keys while iterating over Arrays and Objects.
When you want to iterate over the same array multiple times you need to instanciate ArrayObject and let it create ArrayIterator instances that refer to it either by using foreach or by calling its getIterator() method manually.
Indice dei contenuti
- ArrayIterator::current — Return current array entry
- ArrayIterator::key — Return current array key
- ArrayIterator::next — Move to next entry
- ArrayIterator::rewind — Rewind array back to the start
- ArrayIterator::seek — Seek to position
- ArrayIterator::valid — Check whether array contains more entries
add a note
User Contributed NotesArrayIterator
Venelin Vulkov
11-Nov-2008 01:44
11-Nov-2008 01:44