PHP数组类对象值传递引用传递区别

数组值传递

```php
<?php

function main() {
        $cc = array(
            'a','b'
        );
        change($cc);
        var_dump($cc);
        die;
}
function change($cc){
        $cc = array('dd');
}
main();

output:
array(2) {
  [0]=>
  string(1) "a"
  [1]=>
  string(1) "b"
}
?>
```

数组引用传递
```php
<?php

function main() {
        $cc = array(
            'a','b'
        );
        change($cc);
        var_dump($cc);
        die;
}
function change(&$cc){
        $cc = array('dd');
}
main();
?>

outpout:
array(1) {
  [0]=>
  string(2) "dd"
}
```

类对象值传递
```php
<?php
class pp{
        public $ss = 0;
}
function main() {
        $p = new pp();
        change($p);
        var_dump($p);
        die;
}
function change($p){
        $p->ss = 10;
}
main();
?>

output:
object(pp)#1 (1) {
  ["ss"]=>
  int(10)
}
```

类对象引用传递
```php
<?php
class pp{
        public $ss = 0;
}
function main() {
        $p = new pp();
        change($p);
        var_dump($p);
        die;
}
function change(&$p){
        $p->ss = 10;
}
main();
?>

output:
object(pp)#1 (1) {
  ["ss"]=>
  int(10)
}
```

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PHP数组 类对象 值传递 引用传递 区别

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PHP数组类对象值传递引用传递区别