您如何在PHP中使用反斜杠制作字符串? [英] How do you make a string in PHP with a backslash in it?

问题描述

我需要反斜杠才能成为字符串的一部分.我该怎么办?

I need a backslash to be a part of a string. How can I do it?

推荐答案

当反斜杠\不能转义字符串的终止引号或以其他方式创建有效的转义序列(用双引号引起来的字符串)时，可以使用以下任意一个产生一个反斜杠:

When the backslash \ does not escape the terminating quote of the string or otherwise create a valid escape sequence (in double quoted strings), then either of these work to produce one backslash:

$string = 'abc\def';
$string = "abc\def";
//
$string = 'abc\\def';
$string = "abc\\def";

转义下一个字符会导致解析错误(字符串的引号终止)或有效的转义序列(在双引号中的字符串)，则需要转义反斜杠:

When escaping the next character would cause a parse error (terminating quote of the string) or a valid escape sequence (in double quoted strings) then the backslash needs to be escaped:

$string = 'abcdef\\';
$string = "abcdef\\";

$string = 'abc\012';
$string = "abc\\012";

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