PHP converts HTML into text.

Source: Internet
Author: User
Tags html to text

In php, the built-in strip_tags function is provided for converting html to text, but sometimes this function is not enough. The following summarizes some user-defined functions for your reference.

The most commonly used php function strip_tags

The Code is as follows: Copy code


<? Php
$ Mystr = <SATO
Dozens of lines of HTML code are omitted here.
SATO;
$ Str = strip_tags ($ mystr );
// Here, I have converted my HTML to TXT text. Haha, this function is really convenient.
// The following are some of the plug-in's word splitting operations.
?>


Custom Functions

The Code is as follows: Copy code

<? Php
// $ Document should contain an HTML document.
// In this example, the HTML Tag and javascript code are removed.
// And blank characters. Some common
// Convert the HTML object to the corresponding text.

$ Search = array ("'<script [^>] *?>. *? </Script> 'si ", // remove javascript
"'<[/!] *? [^ <>] *?> 'Si ", // remove the HTML Tag
"'([Rn]) [s] +'", // remove the white space
"'& (Quot | #34);' I", // replaces the HTML Object
"'& (Amp | #38);' I ",
"'& (Lt | #60);' I ",
"'& (Gt | #62);' I ",
"'& (Nbsp | #160);' I ",
"'& (Iexcl | #161);' I ",
"'& (Cent | #162);' I ",
"'& (Pound | #163);' I ",
"'& (Copy | #169);' I ",
"'& # (D +); 'E"); // run as PHP code

$ Replace = array ("",
"",
"\ 1 ",
""",
"&",
"<",
"> ",
"",
Chr (1, 161 ),
Chr (1, 162 ),
Chr (1, 163 ),
Chr (1, 169 ),
"Chr (\ 1 )");

$ Text = preg_replace ($ search, $ replace, $ document );
?>

Later, I saw a method written using PHP on the Internet. Using this method can also convert HTML into TXT text. I personally think it is quite practical. Here I will share it with you, the Code is as follows:

The Code is as follows: Copy code
Function HtmlToText ($ str ){
$ Str = preg_replace ("/<sty (. *)/style> | <scr (. *)/script> | <! -- (. *) -->/IsU "," ", $ str); // remove CSS styles, JS scripts, HTML comments
$ Alltext = ""; // variable used to save the TXT text
$ Start = 1; // The control switch used to detect the <left,> right label
For ($ I = 0; $ I <strlen ($ str); $ I ++) {// traverse each character in the processed string
If ($ start = 0) & ($ str [$ I] = ">") {// if the> right tag is detected, use $ start = 1.
$ Start = 1;
} Else if ($ start = 1) {// screenshot Function
If ($ str [$ I] = "<") {// if the character is <left tag, replace it with <font color = 'red' >|</font>
$ Start = 0;
$ Alltext. = "<font color = 'red' >|</font> ";
} Else if (ord ($ str [$ I])> 31) {// if the character is a valid character with ASCII greater than 31, add the character to the $ alltext variable
$ Alltext. = $ str [$ I];
}
}
}
// Remove spaces and special characters at the bottom
$ Alltext = str_replace ("", "", $ alltext );
$ Alltext = preg_replace ("/& ([^; &] *) (; | &)/", "", $ alltext );
$ Alltext = preg_replace ("/[] +/s", "", $ alltext );
Return $ alltext;
}

The preceding method can also be used to convert the simplified HTML code into TXT text.

Example 3

The Code is as follows: Copy code

Function html2text ($ str, $ encode = 'gb2312 ')
{

$ Str = preg_replace ("/<style .*? </Style>/is "," ", $ str );
$ Str = preg_replace ("/<script .*? </Script>/is "," ", $ str );
$ Str = preg_replace ("/<br s */? />/I "," n ", $ str );
$ Str = preg_replace ("/</? P>/I "," nn ", $ str );
$ Str = preg_replace ("/</? Td>/I "," n ", $ str );
$ Str = preg_replace ("/</? Div>/I "," n ", $ str );
$ Str = preg_replace ("/</? Blockquote>/I "," n ", $ str );
$ Str = preg_replace ("/</? Li>/I "," n ", $ str );

$ Str = preg_replace ("/& nbsp;/I", "", $ str );
$ Str = preg_replace ("/& nbsp/I", "", $ str );

$ Str = preg_replace ("/& amp;/I", "&", $ str );
$ Str = preg_replace ("/& amp/I", "&", $ str );

$ Str = preg_replace ("/& lt;/I", "<", $ str );
$ Str = preg_replace ("/& lt/I", "<", $ str );

$ Str = preg_replace ("/& ldquo;/I", '"', $ str );
$ Str = preg_replace ("/& ldquo/I", '"', $ str );

$ Str = preg_replace ("/& lsquo;/I", "'", $ str );
$ Str = preg_replace ("/& lsquo/I", "'", $ str );

$ Str = preg_replace ("/& rsquo;/I", "'", $ str );
$ Str = preg_replace ("/& rsquo/I", "'", $ str );

$ Str = preg_replace ("/& gt;/I", ">", $ str );
$ Str = preg_replace ("/& gt/I", ">", $ str );

$ Str = preg_replace ("/& rdquo;/I", '"', $ str );
$ Str = preg_replace ("/& rdquo/I", '"', $ str );

$ Str = strip_tags ($ str );
$ Str = html_entity_decode ($ str, ENT_QUOTES, $ encode );
$ Str = preg_replace ("/& amp ("/&#.*?; /I "," ", $ str );

Return $ str;
}

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