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PHP中字符串的三种定义方式

知其黑、受其白发布时间：2021-03-29 11:14:28 ，浏览量：4

PHP中字符串的三种定义方式单引号：

单引号不能解析变量，单引号不能解析转义字符，只能解析单引号和反斜线本身。变量和变量，变量和字符串，字符串和字符串之间可以用点来连接。

双引号：

双引号可以解析变量，变量可以使用特殊字符和{}包括，双引号可以解析所有转义字符。也可以使用点来连接。

heredoc和newdoc：两者都是用来处理大文本：

heredoc:类似于双引号
$str=


    
        
            
                
                
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