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What are escape characters in php? What?

青灯夜游
青灯夜游Original
2020-09-28 13:41:357704browse

In PHP, the escape character is a special character constant, starting with a backslash "\", followed by one or several characters, which has a different meaning from the original character. The escape characters are: "\a" means "ring", "\b" means backspace, "\f" means page feed, "\n" means line feed, "\r" means carriage return, "\ 0" represents a null character, etc.

What are escape characters in php? What?

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What are the escape characters in php? What?

The escape character is a special character constant. The escape character starts with a backslash "\" and is followed by one or more characters. Escape characters have specific meanings that are different from the original meaning of the characters, so they are called "escape" characters.

##\bBackspace (BS), move the current position to the previous column008##\f##\n##Horizontal tab (HT) (jump to the next TAB position)009Vertical Tab (VT)011 represents a backslash character''\'092 represents a single quote (apostrophe) character 039 represents a double quote character \0Three octal digitsTwo digits ten Hexadecimal

Escape character

Meaning

ASCII code value ( Decimal)

\a

##Bell(BEL)

007

Page change (FF), move the current position to Beginning of next page

012

Newline ( LF), move the current position to the beginning of the next line

010

##\r
Press Enter (CR) to move the current position to the beginning of this line

013

\t

\v

\\

\'

##\"

034

##\?
represents a question mark

063
##NULL character(NULL)
000

\ddd

##Any character represented by 1 to 3 octal digits

\xhh

Any character represented by 1 to 2 hexadecimal digits

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