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php single quotes double quotes

巴扎黑
Release： 2016-11-29 09:42:25
Original
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 $b = '110';  
$type = gettype($b);  
echo '333'."$type\n";  
echo '333'.'$type\\';
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输出 

Php代码  

333string  

333$type\  


1.双引号 里的东西 输入的时候能判断是否 包含 变量，如果包含 变量 就一起输出 

2.单引号里的就不一样，不判断是否有变量，就全部当成 字符串 输出 

3.单引号解析的时间比双引号快 

4.单引号支持\转义符,双引号支持的转义符多


Related labels：
PHP php 单引号 双引号
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