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iterators_001.phpt
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--TEST--
ZE2 iterators and foreach
--FILE--
<?php
class c_iter implements Iterator {
private $obj;
private $num = 0;
function __construct($obj) {
echo __METHOD__ . "\n";
$this->num = 0;
$this->obj = $obj;
}
function rewind(): void {
}
function valid(): bool {
$more = $this->num < $this->obj->max;
echo __METHOD__ . ' = ' .($more ? 'true' : 'false') . "\n";
return $more;
}
function current(): mixed {
echo __METHOD__ . "\n";
return $this->num;
}
function next(): void {
echo __METHOD__ . "\n";
$this->num++;
}
function key(): mixed {
echo __METHOD__ . "\n";
switch($this->num) {
case 0: return "1st";
case 1: return "2nd";
case 2: return "3rd";
default: return "???";
}
}
}
class c implements IteratorAggregate {
public $max = 3;
function getIterator(): Traversable {
echo __METHOD__ . "\n";
return new c_iter($this);
}
}
echo "===Array===\n";
$a = array(0,1,2);
foreach($a as $v) {
echo "array:$v\n";
}
echo "===Manual===\n";
$t = new c();
for ($iter = $t->getIterator(); $iter->valid(); $iter->next()) {
echo $iter->current() . "\n";
}
echo "===foreach/std===\n";
foreach($t as $v) {
echo "object:$v\n";
}
echo "===foreach/rec===\n";
foreach($t as $v) {
foreach($t as $w) {
echo "double:$v:$w\n";
}
}
echo "===foreach/key===\n";
foreach($t as $i => $v) {
echo "object:$i=>$v\n";
}
print "Done\n";
exit(0);
?>
--EXPECT--
===Array===
array:0
array:1
array:2
===Manual===
c::getIterator
c_iter::__construct
c_iter::valid = true
c_iter::current
0
c_iter::next
c_iter::valid = true
c_iter::current
1
c_iter::next
c_iter::valid = true
c_iter::current
2
c_iter::next
c_iter::valid = false
===foreach/std===
c::getIterator
c_iter::__construct
c_iter::valid = true
c_iter::current
object:0
c_iter::next
c_iter::valid = true
c_iter::current
object:1
c_iter::next
c_iter::valid = true
c_iter::current
object:2
c_iter::next
c_iter::valid = false
===foreach/rec===
c::getIterator
c_iter::__construct
c_iter::valid = true
c_iter::current
c::getIterator
c_iter::__construct
c_iter::valid = true
c_iter::current
double:0:0
c_iter::next
c_iter::valid = true
c_iter::current
double:0:1
c_iter::next
c_iter::valid = true
c_iter::current
double:0:2
c_iter::next
c_iter::valid = false
c_iter::next
c_iter::valid = true
c_iter::current
c::getIterator
c_iter::__construct
c_iter::valid = true
c_iter::current
double:1:0
c_iter::next
c_iter::valid = true
c_iter::current
double:1:1
c_iter::next
c_iter::valid = true
c_iter::current
double:1:2
c_iter::next
c_iter::valid = false
c_iter::next
c_iter::valid = true
c_iter::current
c::getIterator
c_iter::__construct
c_iter::valid = true
c_iter::current
double:2:0
c_iter::next
c_iter::valid = true
c_iter::current
double:2:1
c_iter::next
c_iter::valid = true
c_iter::current
double:2:2
c_iter::next
c_iter::valid = false
c_iter::next
c_iter::valid = false
===foreach/key===
c::getIterator
c_iter::__construct
c_iter::valid = true
c_iter::current
c_iter::key
object:1st=>0
c_iter::next
c_iter::valid = true
c_iter::current
c_iter::key
object:2nd=>1
c_iter::next
c_iter::valid = true
c_iter::current
c_iter::key
object:3rd=>2
c_iter::next
c_iter::valid = false
Done