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|
--TEST--
foreach with Iterator.
--FILE--
<?php
class MealIterator implements Iterator {
private $pos=0;
private $myContent=array("breakfast", "lunch", "dinner");
public function valid() {
global $indent;
echo "$indent--> " . __METHOD__ . " ($this->pos)\n";
return $this->pos<3;
}
public function next() {
global $indent;
echo "$indent--> " . __METHOD__ . " ($this->pos)\n";
return $this->myContent[$this->pos++];
}
public function rewind() {
global $indent;
echo "$indent--> " . __METHOD__ . " ($this->pos)\n";
$this->pos=0;
}
public function current() {
global $indent;
echo "$indent--> " . __METHOD__ . " ($this->pos)\n";
return $this->myContent[$this->pos];
}
public function key() {
global $indent;
echo "$indent--> " . __METHOD__ . " ($this->pos)\n";
return "meal " . $this->pos;
}
}
$f = new MealIterator;
var_dump($f);
echo "-----( Simple iteration: )-----\n";
foreach ($f as $k=>$v) {
echo "$k => $v\n";
}
$f->rewind();
$indent = " ";
echo "\n\n\n-----( Nested iteration: )-----\n";
$count=1;
foreach ($f as $k=>$v) {
echo "\nTop level " . $count++ . ": \n";
echo "$k => $v\n";
$indent = " ";
foreach ($f as $k=>$v) {
echo " $k => $v\n";
}
$indent = " ";
}
?>
===DONE===
--EXPECTF--
object(MealIterator)#%d (2) {
["pos":"MealIterator":private]=>
int(0)
["myContent":"MealIterator":private]=>
array(3) {
[0]=>
string(9) "breakfast"
[1]=>
string(5) "lunch"
[2]=>
string(6) "dinner"
}
}
-----( Simple iteration: )-----
--> MealIterator::rewind (0)
--> MealIterator::valid (0)
--> MealIterator::current (0)
--> MealIterator::key (0)
meal 0 => breakfast
--> MealIterator::next (0)
--> MealIterator::valid (1)
--> MealIterator::current (1)
--> MealIterator::key (1)
meal 1 => lunch
--> MealIterator::next (1)
--> MealIterator::valid (2)
--> MealIterator::current (2)
--> MealIterator::key (2)
meal 2 => dinner
--> MealIterator::next (2)
--> MealIterator::valid (3)
--> MealIterator::rewind (3)
-----( Nested iteration: )-----
--> MealIterator::rewind (0)
--> MealIterator::valid (0)
--> MealIterator::current (0)
--> MealIterator::key (0)
Top level 1:
meal 0 => breakfast
--> MealIterator::rewind (0)
--> MealIterator::valid (0)
--> MealIterator::current (0)
--> MealIterator::key (0)
meal 0 => breakfast
--> MealIterator::next (0)
--> MealIterator::valid (1)
--> MealIterator::current (1)
--> MealIterator::key (1)
meal 1 => lunch
--> MealIterator::next (1)
--> MealIterator::valid (2)
--> MealIterator::current (2)
--> MealIterator::key (2)
meal 2 => dinner
--> MealIterator::next (2)
--> MealIterator::valid (3)
--> MealIterator::next (3)
Notice: Undefined offset: 3 in %s on line %d
--> MealIterator::valid (4)
===DONE===
|
