V2EX = way to explore
V2EX 是一个关于分享和探索的地方
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This topic created in 3151 days ago, the information mentioned may be changed or developed.
php > var_dump("\Nabc");
string(5) "\Nabc"
php > var_dump("\'abc");
string(5) "\'abc"
php > var_dump('\'abc');
string(4) "'abc"
php > var_dump('\"abc');
string(5) "\"abc"
php > var_dump('\\abc');
string(4) "\abc"
php > var_dump('\001abc');
string(7) "\001abc"
php > var_dump("\001abc");
string(4) "abc"
另一个 php 例子，为了往 firefox 的配置文件中正则匹配写一个\,php 字符串内部转义一次，正则引擎转义一次，firefox 读配置转义一次，js 转义一次，我写了"\\\\\\\\"共 16 个\
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