php 实现Iterator 接口
<?php
class MyIterator implements Iterator{
private $var = array();
public function __construct($array){
if(is_array($array)){
$this->var = $array;
}
}
public function rewind(){
echo "reminding<br>";
reset($this->var);
}
public function current(){
$var = current($this->var);
echo "current :$var<br>";
return $var;
}
public function key(){
$var = key($this->var);
echo "key::$var<br>";
return $var;
}
public function next(){
$var = next($this->var);
echo "next:$var<br>";
return $var;
}
public function valid(){
$var = $this->current() !== false;
echo "valid:{$var}<br>";
return $var;
}
}
$value = array(1,2,3);
$it = new MyIterator($value);
foreach($it as $a=> $b){
print "$a:$b<br>";
}
<?php
class MyIterator implements Iterator{
private $var = array();
public function __construct($array){
if(is_array($array)){
$this->var = $array;
}
}
public function rewind(){
echo "reminding<br>";
reset($this->var);
}
public function current(){
$var = current($this->var);
echo "current :$var<br>";
return $var;
}
public function key(){
$var = key($this->var);
echo "key::$var<br>";
return $var;
}
public function next(){
$var = next($this->var);
echo "next:$var<br>";
return $var;
}
public function valid(){
$var = $this->current() !== false;
echo "valid:{$var}<br>";
return $var;
}
}
$value = array(1,2,3);
$it = new MyIterator($value);
foreach($it as $a=> $b){
print "$a:$b<br>";
}
?>
?>
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