: This article mainly introduces PHP escape characters. if you are interested in the PHP Tutorial, refer to it. In many cases, escape errors may occur when you capture some text from a third party. Summarize some php built-in escape functions, as shown in
Function name |
Meaning |
Introduction |
Htmlspecialchars |
Convert the ampersand, single double quotation marks, greater than or less than sign into HTML format |
& Convert & "" 'Convert' <转成< > Convert to> |
Htmlentities () |
Convert all characters to HTML format |
In addition to the above htmlspecialchars characters, the two-byte characters are also displayed as encoding. |
Addslashes |
Double quotation marks, backslash, and NULL plus backslash escape |
The modified characters include single quotation marks ('), double quotation marks ("), backslash (\), and NULL. |
Stripslashes |
Remove backslash characters |
Removes the backslash from the string. If there are two backslash lines in a row, remove one and leave one. If there is only one backslash, remove it directly. |
Quotemeta |
Add a reference symbol |
Include. \ + * in the string *? [^] ($) And other characters are preceded by the backslash "\" symbol. |
Nl2br () |
Convert line breaks
|
|
Strip_tags |
Remove HTML and PHP tags |
Remove any HTML and PHP tags in the string, including the contents between Mark blocking. Note: if the HTML and PHP tags of the string are incorrect, an error is returned. |
Mysql_real_escape_string |
Escape special characters in SQL strings |
Escape \ x00 \ n \ r space \ '"\ x1a, which is very effective for processing multi-byte characters. Mysql_real_escape_string determines the character set, and mysql_escape_string does not need to be considered. |
Base64_decode |
Base64 decoding |
Decodes MIME base64 encoded data. |
Base64_encode |
Base64 encoding |
Use MIME base64 to encode data |
Urldecode |
URL decoding |
Decodes the encoded URL string |
Urlencode |
URL encoding |
Encode a URL string |
'). AddClass ('pre-numbering '). hide (); $ (this ). addClass ('Has-numbering '). parent (). append ($ numbering); for (I = 1; I <= lines; I ++) {$ numbering. append ($ ('
'). Text (I) ;}; $ numbering. fadeIn (1700) ;}) ;}; script
The above section introduces PHP escape characters, including some content, and hopes to help those who are interested in PHP tutorials.