PHP将数组存入数据库中的四种方式

最近突然遇到了一个问题，如何用PHP将数组存入到数据库中，经过自己的多方查找和研究，总结了以下四种方法：

1.implode()和explode()方式
2.print_r()和自定义函数方式
3.serialize()和unserialize()方式
4.json_encode()和json_decode()方式

<?php// 将数组存入数据库中的四种方式详见我的博客 http://blog.csdn.net/the_victory//1.implode和explode方式//2.print_r和自定义函数方式//3.serialize和unserialize方式//4.json_encode和json_decode方式// 如果想运行该文件，需要建立数据库admin,和数据表test,或者修改代码//   	//---------------------------------------------------------------//  CREATE TABLE `test` (//   `id` int(10) unsigned NOT NULL AUTO_INCREMENT key,//   `array` text,// ) ENGINE=InnoDB DEFAULT CHARSET=utf8 ;//定义用print_r将数组存储到数据库中的类header('content-type:text/html; charset=utf8');define("DB_HOST","localhost");define("DB_USER","root");define("DB_PWD","0227");define("DB_DBNAME","admin");define("DB_CHARSET","utf8");// 定义逆置print_r值的类
class Trie {protected $dict = array();protected $buf = '';function set($word, $value='') {if(is_array($word)) foreach($word as $k=>$v) $this->set($k, $v);$p =& $this->dict;foreach(str_split($word) as $ch) {if(! isset($p[$ch])) $p[$ch] = array();$p =& $p[$ch];}$p['val'] = $value;return $this;}function parse($str) {$this->doc = $str;$this->len = strlen($str);$i = 0;while($i < $this->len) {$t = $this->find($this->dict, $i);if($t) {$i = $t;$this->buf = '';}else $this->buf .= $this->doc{$i++};}}protected function find(&$p, $i) {if($i >= $this->len) return $i;$t = 0;$n = $this->doc{$i};if( isset($p[$n]) ) $t = $this->find($p[$n], $i+1);if($t) return $t;if( isset($p['val']) ) {$ar = explode(',', $p['val']);call_user_func_array( array($this, array_shift($ar)), $ar );return $i;}return $t;}function __call($method, $param) {echo "****\n$this->buf 未定义方法:$method 参数:" . join(',', $param) . "<br />\n";}
}class App extends Trie {public $res = array();protected $stack = array();protected $keyname = '';protected $buf = '';function __construct() {$this->stack[] =& $this->res;}protected function group() {if(! $this->keyname) return;$cnt = count($this->stack) - 1;$this->stack[$cnt][$this->keyname] = array();$this->stack[] =& $this->stack[$cnt][$this->keyname];$this->keyname = '';}protected function brackets($c) {$cnt = count($this->stack) - 1;switch($c) {case ')':if($this->keyname) $this->stack[$cnt][$this->keyname] = trim($this->buf);$this->keyname = '';array_pop($this->stack);break;case '[':if($this->keyname) $this->stack[$cnt][$this->keyname] = trim($this->buf);break;case ']':$this->keyname = $this->buf;}$this->buf = '';}
}
//类结束
//
//
//连接数据库function connect(){$link = @mysql_connect(DB_HOST,DB_USER,DB_PWD) or die("数据库连接失败ERR:".mysql_errno().":".mysql_error());mysql_select_db(DB_DBNAME) or die("打开数据库失败");//mysql_errno()即显示错误数量；mysql_error()即显示错误信息；$sql = 'set names '.DB_CHARSET;mysql_query($sql) or die ("设置字符集失败");return $link;}
//插入数据库函数function insert($table, $array){$keys = join(",",array_keys($array));$vals = "'".join("','",array_values($array))."'";$sql = "insert {$table}({$keys})values({$vals})";mysql_query($sql);return mysql_insert_id();}//提取刚刚插入的数据function select($table){$sql = "select array from {$table} order by id desc";if($result = mysql_query($sql)){$values = mysql_fetch_assoc($result); $value = array_pop($values);}else{echo '提取失败';}return $value;}//implode方式 一维数组可以，二维数组不可以，并且关联数组无效function plode($table,$arr){echo '<h3 style="color:red"><b>implode</b>方式<br/>原数组,未插入前:</h3>';var_dump($arr);$str = addslashes(implode(",", $arr));$insert = array('id'=>'','array'=>$str);if(insert($table,$insert)){echo "插入成功.<br/>";}else{echo "插入失败";exit;}$value = select($table);echo '<h3 style="color:red"><插入的内容：></h3>';var_dump($value);$explode = explode(",",$value);echo '<h3 style="color:red"><最终提取后处理的内容：></h3>';var_dump($explode);}// print_r方式function printR($table,$arr){echo '<h3 style="color:red"><b>print_r方式</b><br/>原数组,未插入前:></h3>';var_dump($arr);$print = addslashes(print_r($arr, true));$insert = array('id'=>'','array'=>$print);insert($table,$insert);$value = select($table);echo '<h3 style="color:red"><插入的内容:></h3>';var_dump($value);
$p = new App;
$p->set('Array','group')->set('[','brackets,[')->set('] =>','brackets,]')->set(')','brackets,)');
$p->parse($value);echo '<h3 style="color:red"><最终提取后处理的内容：></h3>';var_dump($p->res);}// serialize方式
function serial($table,$arr){echo '<h3 style="color:red"><b>serialize</b>方式<br/>原数组,未插入前:</h3>';var_dump($arr);$serialize = addslashes(serialize($arr));$insert = array('id'=>'','array'=>$serialize);insert($table,$insert);$value = select($table);echo '<h3 style="color:red"><方式插入数据库中的内容:></h3>';var_dump($value);$serialize = unserialize($value);echo '<h3 style="color:red"><最终提取后处理的内容：></h3>';var_dump($serialize);
}
//json方式
function json($table,$arr){echo '<h3 style="color:red"><b>json_encode</b>方式<br/>原数组,未插入前:</h3>';var_dump($arr);$enjson = addslashes(json_encode($arr));$insert = array('id'=>'','array'=>$enjson);insert($table,$insert);$value = select($table);echo '<h3 style="color:red"><方式插入数据库中的内容:></h3>';var_dump($value);$deunjson = json_decode($value,true);echo '<h3 style="color:red"><最终提取后处理的内容：></h3>';var_dump($deunjson);
}
// 执行函数//函数end?>
<form action="" method="get">
<select name="kind"><option value="1">一维数组</option><option value="2">二维数组</option></select>
<select name="id"><option value="1">implode方式</option><option value="2">print_r方式</option><option value="3">serialize方式</option><option value="4">json_encode方式</option></select>
<input type="submit" value="提交" name="submit">
</form>
<?phpif(!empty($_GET['submit'])){$kind = $_GET['kind'];$id = $_GET['id'];}else{echo "请选择后按提交键";exit;}connect();
$ar1 =array('abcd'=>"sdfasdf",'bbb'=>'lxg','ccc'=>'bbbbbbbbb');//定义一个一维数组
$ar2 = array('a'=>$ar1,'b'=>$ar1);	//二维数组
$table = "test";//使用的数据表if($kind=='1'){$arr = $ar1;
}else{$arr = $ar2;
}
switch ($id) {case '1':# code...plode($table, $arr);break;case '2':printR($table,$arr);break;case '3':serial($table,$arr);break;case '4':json($table,$arr);break;default:break;}?>

1.implode方式结果：

一维数组：