What does slash mean in php

There are two types of slashes in php, namely: 1. The forward slash "/" symbol, which is equivalent to a bracket wrapping the content; 2. The backslash "\" symbol, which represents an escape character .

The operating environment of this article: Windows 7 system, PHP version 7.1, DELL G3 computer

What do the slashes in php mean?

php The difference between forward slash '/' and backslash '\'

$val = preg_replace('/([\x00-\x08,\x0b-\x0c,\x0e-\x19])/', '', $val);

Forward slash is used to wrap the content equivalent to a bracket;

The backslash is:

Marks the next character as a special character, or a literal character, or a backward reference, or an octal escape character.

For example, 'n' matches the character "n". '\n' matches a newline character. The sequence '\\' matches "\" and "\(" matches "(".

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