Javascriptunescape () escape () character encoding and decoding function

The escape () function can encode a string so that the string can be read on all computers. Syntax: escape (string) parameter: string required. description: the string to be escaped or encoded.

The escape () function can encode a string so that the string can be read on all computers.

Syntax:Escape (string)Parameters:String required,Description:The string to be escaped or encoded.

Return value:A copy of the encoded string. Some characters are replaced with hexadecimal escape sequences.

1. Function phpescape ($ str)
2. {
3. $ Sublen = strlen ($ str );
4. $ Retrunstring = "";
5. For ($ I = 0; $ I <$ sublen; $ I ++)
6. {
7. If (ord ($ str [$ I]) >= 127)
8. {
9. $ Tmpstring = bin2hex (iconv ("gb2312", "UCS-2", substr ($ str, $ I, 2 )));
10. // $ Tmpstring = substr ($ tmpstring,). substr ($ tmpstring,); this option may be enabled in window
11. $ Retrunstring. = "% u". $ tmpstring;
12. $ I ++;
13. } Else {
14. $ Retrunstring. = "%". dechex (ord ($ str [$ I]);
15. }
16. }
17. Return $ retrunstring;
18. }

The unescape () function can decode strings encoded by escape.

Syntax:Unescape (string)Parameters:String required,Description:The string to be decoded or reversed.

Return value:String is a decoded copy.

Note:This function works like this: find the character sequence in the form of % xx and % uxxxx (x indicates a hexadecimal number ), decodes character sequences such as unicode u00xx and uxxxx.

1. Function unescape ($ str ){
2. $ Str = rawurldecode ($ str );
3. Preg_match_all ("/% u. {4} | & # x. {4}; | & # d +; |. +/u", $ str, $ r );
4. $ Ar = $ r [0];
5. Foreach ($ ar as $ k => $ v ){
6. If (substr ($ v, 0, 2) = "% u ")
7. $ Ar [$ k] = iconv ("UCS-2", "gbk", pack ("h4", substr ($ v,-4 )));
8. Elseif (substr ($ v, 0, 3) = "& # x ")
9. $ Ar [$ k] = iconv ("UCS-2", "gbk", pack ("h4", substr ($ v, 3,-1 )));
10. Elseif (substr ($ v, 0, 2) = "&#"){
11. $ Ar [$ k] = iconv ("UCS-2", "gbk", pack ("n", substr ($ v, 2,-1 )));
12. }
13. }
14. Return join ("", $ ar );
15. }