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Single quotes and double quotes modify escape characters in strings

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Release： 2016-07-25 08:50:34

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This is certainly not about the performance of variables in strings under single and double quotes, but the differences in some uncommon scenarios:
1. The length of strings containing escape characters.
[See code section 1]
2. Use escape characters

echo strlen("n");
echo strlen('n');
echo strlen(''');

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Related labels：

单引号和双引号修饰字符串里的转义符

source：php.cn

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