php从字符串中提取值
我有一个包含以下字符串的会话变量。
a:2:{s:7:"LoginId";s:32:"361aaeebef992bd8b57cbf390dcb3e8d";s:8:"Username";s:6:"aaaaaa";}
我想提取用户名“aaaaaa”的值。谁能建议更简单/更有效的方式？
$session_data = unserialize($_SESSION["SecurityAccess_CustomerAccess"]);
$session_user_array = explode(';', $_SESSION["SecurityAccess_CustomerAccess"]);
$temp = $session_user_array[3];
$temp = explode(':', $temp);
$username = $temp[2];
echo $username;
它变得更丑了......不得不删除引号。
if ($_SESSION["SecurityAccess_CustomerAccess"]){
$session_data = unserialize($_SESSION["SecurityAccess_CustomerAccess"]);
$session_user_array = explode(';', $_SESSION["SecurityAccess_CustomerAccess"]);
$temp = $session_user_array[3];
$temp = explode(':', $temp);
$temp = str_replace("\"", "", $temp[2]);
$username = $temp;
echo $username ;
}
I have a session variable that contains the following string.
a:2:{s:7:"LoginId";s:32:"361aaeebef992bd8b57cbf390dcb3e8d";s:8:"Username";s:6:"aaaaaa";}
I want to extract the value of username "aaaaaa". can anyone suggest easier/more efficient manner?
$session_data = unserialize($_SESSION["SecurityAccess_CustomerAccess"]);
$session_user_array = explode(';', $_SESSION["SecurityAccess_CustomerAccess"]);
$temp = $session_user_array[3];
$temp = explode(':', $temp);
$username = $temp[2];
echo $username;
It just got uglier... had to removed quotes.
if ($_SESSION["SecurityAccess_CustomerAccess"]){
$session_data = unserialize($_SESSION["SecurityAccess_CustomerAccess"]);
$session_user_array = explode(';', $_SESSION["SecurityAccess_CustomerAccess"]);
$temp = $session_user_array[3];
$temp = explode(':', $temp);
$temp = str_replace("\"", "", $temp[2]);
$username = $temp;
echo $username ;
}
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评论（3）
这就是您所需要的：
您的会话数据是以 序列化 形式存储的数组，因此反序列化会将其变成返回到常规 PHP 数组。
This is all you need:
Your session data is an array stored in serialized form, so unserializing it turns it back into a regular PHP array.
如果数据总是以类似的方式形成，我建议使用正则表达式。
If the data will always be formed in a similar manner, I would suggest using a regular expression.
如果这些值的位置始终相同，您可能可以编写某种类型的正则表达式来帮助解决其中的一些问题。但我认为这里的内容非常适合可读性。如果有人追随你，他们就会很清楚你想要实现的目标。像这样的字符串的正则表达式可能不会产生相同的效果。
You could probably write a some type of regular expression to help with some of this if the placement of these values were always the same. But I think what you have here is great for readability. If anyone came after you they would have a good idea of what you are trying to achieve. A regular expression for a string like this would probably not have the same effect.