php json与xml序列化/反序列化
在web开发中对象的序列化与反序列化经常使用，比较主流的有json格式与xml格式的序列化与反序列化，今天想写个jsop的小demo，结果发现不会使用php序列化，查了一下资料，做个笔记简单数组json格式序列化/反序列化
php提供了json_encode和json_decode函数对对象进行json格式序列化/反序列化操作
$data=array('Name'=>'Byron','Age'=>24,'Sex'=>'Male','Friends'=>array('Casper','Frank','Vincent')); $json=json_encode($data);//将数组序列化为json字符串 echo $json.'<br>'; $array_json= json_decode($json);//将json字符串反序列化为数组 while(list($key,$value)=each($array_json)){ if(!is_array($value)){ echo "$key: $value<br>"; }else{ echo "$key: "; foreach ($value as $current) { echo "$current "; } echo '<br>'; } }php提供wddx_serialize_value和wddx_deserialize函数对对象进行xml格式序列化/反序列化操作
$data=array('Name'=>'Byron','Age'=>24,'Sex'=>'Male','Friends'=>array('Casper','Frank','Vincent')); $xml=wddx_serialize_value($data);//把数组序列化为xml字符串 echo $xml.'<br>'; $array_xml=wddx_deserialize($xml);//把xml字符串反序列化为数组 while(list($key,$value)=each($array_xml)){ if(!is_array($value)){ echo "$key: $value<br>"; }else{ echo "$key: "; foreach ($value as $current) { echo "$current "; } echo '<br>'; } }
虽然由于HTML转码原因，输出格式很奇怪，但其实序列化的字符串是这样的
和json格式相比较的话，多出来不少字段
复杂对象json格式序列化/反序列化很多时候我们在进行操作的时候，处理的对象并不是简单数组，而是我们自定义的一个对象的数组，json_encode和json_decode也是可以胜任的。自定义一个和上面数组内容类似的对象
class Me { public $name; public $age; public $friends; function __construct($name,$age,$friends) { $this->name=$name; $this->age=$age; $this->friends=$friends; } }
$me1=new Me('Byron',24,array('Casper','Frank','Vincent')); $me2=new Me('Casper',25,array('Byron','Frank','Vincent')); $me3=new Me('Frank',26,array('Casper','Byron','Vincent')); //创建一个复杂的数组，子元素是自定义类，自定义类中包含数组字段 $array_me=array($me1,$me2,$me3); $json=json_encode($array_me);//序列化对象数组为json字符串 echo $json.'<br>'; $a=json_decode($json);//将json字符串反序列化为对象数组 foreach ($a as $aa) { echo $aa->name.'<br>'; }
可以看到序列化出来的字符串格式非常符合预期。复杂对象xml格式序列化/反序列化同样wddx_serialize_value和wddx_deserialize函数也能胜任复杂对象进行xml格式序列化/反序列化操作，使用刚才的对象做例子
$me1=new Me('Byron',24,array('Casper','Frank','Vincent')); $me2=new Me('Casper',25,array('Byron','Frank','Vincent')); $me3=new Me('Frank',26,array('Casper','Byron','Vincent')); //创建一个复杂的数组，子元素是自定义类，自定义类中包含数组字段 $array_me=array($me1,$me2,$me3); $xml=wddx_serialize_value($array_me);//序列化对象数组为xml字符串 echo $xml.'<br>'; $a=wddx_deserialize($xml);//将xml字符串反序列化为对象数组 foreach ($a as $aa) { echo $aa->name.'<br>'; }生成的xml字符串结构是这样的
最后初学php，文章多有谬误，希望大家批评指正。
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