php教程|php手册
php教程-php手册
在php中，可以对数组，变量，对象等进行序列化（静态变量，常量不会被序列化）
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$varname = $value; } public function __get($varname) { return $this->$varname; } }$data = array( ame=>zhangsan, password=>pwd123 ); $test = abcd; $ts = new TestSerialize(); $ts->name = zhangsan_2; $ts->password = pwd123_2; echo var=>.serialize($test).
; echo array=>.serialize($data).
; echo object=>.serialize($ts).
; ?>
输出结果
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var=>s:4:"abcd";array=>a:2:{s:4:"name";s:8:"zhangsan";s:8:"password";s:6:"pwd123";}object=>O:13:"TestSerialize":2:{s:19:"TestSerializename";s:10:"zhangsan_2";s:23:"TestSerializepassword";s:8:"pwd123_2";}
序列化产生的数据可以保存在本地文件中，也可以进行网络传输
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function writeObject($filename,$data=\){ if(!file_exists(dirname(__FILE__)./tmp/)) { mkdir(dirname(__FILE__)./tmp/); } $fp = fopen ( dirname(__FILE__)./tmp/.$filename, "w+" ); if (flock($fp, LOCK_EX )) //给文件加锁 { fwrite($fp, $data ); flock( $fp, LOCK_UN ); //给文件解锁 } else { echo Couldn\ lock the file !; } fclose ( $fp );} function readObject($filename){ if(file_exists(dirname(__FILE__)./tmp/.$filename)) { $fp = fopen ( dirname(__FILE__)./tmp/.$filename, "r" ); stream_set_timeout($fp,2); $contents = fread($fp, filesize(dirname(__FILE__)./tmp/.$filename)); fclose ($fp); return $contents; } return NULL;}
测试一下
writeObject(data.txt,serialize($data));writeObject(array.txt,serialize($test));writeObject(object.txt,serialize($ts)); echo readObject(data.txt);echo readObject(data.txt);echo readObject(data.txt);
打印结果
a:2:{s:4:"name";s:8:"zhangsan";s:8:"password";s:6:"pwd123";}s:4:"abcd";O:13:"TestSerialize":2:{s:19:"TestSerializename";s:10:"zhangsan_2";s:23:"TestSerializepassword";s:8:"pwd123_2";}
为了保证持久化的有效性，我们可以对从数据库读取出来的文件反序列化
$f_data = readObject(data.txt);$f_array = readObject(array.txt);$f_object = readObject(object.txt); $d = unserialize($f_data); $a = unserialize($f_array); $u = unserialize($f_object); print_r($d);echo
;echo $a;echo
;echo $u->name;
输出结果
Array ( [name] => zhangsan [password] => pwd123 ) abcdzhangsan_2
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