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trim去掉特殊符号$的问题

WBOY
Release： 2016-06-20 12:31:24
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 $source ="$http://www.baidu.com/call.scv$";echo trim($source,"$");
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目的是去除$source前后的 $ 号
但是输出为，多去除了http

://www.baidu.com/call.scv

求指点，谢谢！


回复讨论(解决方案)

$source ='$http://www.baidu.com/call.scv$'; 这里应该是单引号
echo trim($source,'$'); 

$source ='$http://www.baidu.com/call.scv$';
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改为单引号，双引号php会解析$http 

error_reporting(E_ALL ^ E_NOTICE);$source ="$http://www.baidu.com/call.scv$";echo $source;
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因为并不存在变量 $http，所以一开始 http 就不存在了
这样写才对 
$source ='$http://www.baidu.com/call.scv$';echo trim($source,"$");
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trim去掉特殊符号$的问题
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