Common functions in PHP collection programs-PHP Tutorial

Common functions in PHP collection programs. Copy the code as follows: get the current script URL functionget_php_url () {if (! Empty ($ _ SERVER ["REQUEST_URI"]) {$ scriptName $ _ SERVER ["REQUEST_URI"]; $ nowurl $ SC The code is as follows:

// Obtain the current script URL
Function get_php_url ()
{
If (! Empty ($ _ SERVER ["REQUEST_URI"])
{
$ ScriptName = $ _ SERVER ["REQUEST_URI"];
$ Nowurl = $ scriptName;
}
Else
{
$ ScriptName = $ _ SERVER ["PHP_SELF"];
If (empty ($ _ SERVER ["QUERY_STRING"])
$ Nowurl = $ scriptName;
Else
$ Nowurl = $ scriptName ."?". $ _ SERVER ["QUERY_STRING"];
}
Return $ nowurl;
}

// Convert the fullwidth number into a halfwidth number
Function GetAlabNum ($ fnum)
{
$ Nums = array ("0", "1", "2", "3", "4", "5", "6", "7 ", "8", "9 ");
$ Fnums = 0123456789 ″;
For ($ I = 0; $ I <= 9; $ I ++) $ fnum = str_replace ($ nums [$ I], $ fnums [$ I], $ fnum );
$ Fnum = ereg_replace ("[^ 0-9 \.] | ^ 0 {1,}", ", $ fnum );
If ($ fnum = "") $ fnum = 0;
Return $ fnum;
}

// Remove HTML tags
Function Text2Html ($ txt)
{
$ Txt = str_replace ("", ", $ txt );
$ Txt = str_replace ("<", "<", $ txt );
$ Txt = str_replace (">", ">", $ txt );
$ Txt = preg_replace ("/[\ r \ n] {1,}/isU ","
\ R \ n ", $ txt );
Return $ txt;
}

// Clear the HTML tag
Function ClearHtml ($ str)
{
$ Str = str_replace ('<', '<', $ str );
$ Str = str_replace ('>', '>', $ str );
Return $ str;
}

// Convert relative paths to absolute paths
Function relative_to_absolute ($ content, $ feed_url)
{
Preg_match ('/(http | https | ftp): \ //', $ feed_url, $ protocol );
$ Server_url = preg_replace ("/(http | https | ftp | news): \/", "", $ feed_url );
$ Server_url = preg_replace ("/\/. */", "", $ server_url );

If ($ server_url = ")
{
Return $ content;
}

If (isset ($ protocol [0])
{
$ New_content = preg_replace ('/href = "\ //', 'href =" '. $ protocol [0]. $ server_url.'/', $ content );
$ New_content = preg_replace ('/src = "\ //', 'src =" '. $ protocol [0]. $ server_url.'/', $ new_content );
}
Else
{
$ New_content = $ content;
}
Return $ new_content;
}
// Get all links
Function get_all_url ($ code ){
Preg_match_all ('/"\'] +) [" | \ ']? \ S * [^>] *> ([^>] +) <\/a>/I ', $ code, $ arr );
Return array ('name' => $ arr [2], 'URL' => $ arr [1]);
}

// Obtain the content in the specified tag
Function get_tag_data ($ str, $ start, $ end)
{
If ($ start = "| $ end = ")
{
Return;
}
$ Str = explode ($ start, $ str );
$ Str = explode ($ end, $ str [1]);
Return $ str [0];
}

// Convert each line of the HTML table into an array in CSV format
Function get_tr_array ($ table)
{
$ Table = preg_replace ("' ] *?> 'Si ", '"', $ table );
$ Table = str_replace ("", '",', $ Table );
$ Table = str_replace (""," {Tr} ", $ table );
// Remove the HTML tag
$ Table = preg_replace ("'<[\/\!] *? [^ <>] *?> 'Si ",", $ table );
// Remove the white space characters
$ Table = preg_replace ("'([\ r \ n]) [\ s] +'", ", $ table );
$ Table = str_replace ("", ", $ table );
$ Table = str_replace ("", ", $ table );
$ Table = explode (", {tr}", $ table );
Array_pop ($ table );
Return $ table;
}

// Convert each row and column of an HTML table into an array to collect table data
Function get_td_array ($ table)
{
$ Table = preg_replace ("' ] *?> 'Si ",", $ table );
$ Table = preg_replace ("' ] *?> 'Si ",", $ table );
$ Table = preg_replace ("' ] *?> 'Si ",", $ table );
$ Table = str_replace (""," {Tr} ", $ table );
$ Table = str_replace (""," {Td} ", $ table );
// Remove the HTML tag
$ Table = preg_replace ("'<[\/\!] *? [^ <>] *?> 'Si ",", $ table );
// Remove the white space characters
$ Table = preg_replace ("'([\ r \ n]) [\ s] +'", ", $ table );
$ Table = str_replace ("", ", $ table );
$ Table = str_replace ("", ", $ table );

$ Table = explode ('{tr}', $ table );
Array_pop ($ table );
Foreach ($ table as $ key => $ tr)
{
$ Td = explode ('{td}', $ tr );
Array_pop ($ td );
$ Td_array [] = $ td;
}
Return $ td_array;
}

// Return all words in the string $ distinct = true to remove duplicates
Function split_en_str ($ str, $ distinct = true)
{
Preg_match_all ('/([a-zA-Z] +)/', $ str, $ match );
If ($ distinct = true)
{
$ Match [1] = array_unique ($ match [1]);
}
Sort ($ match [1]);
Return $ match [1];
}

The http://www.bkjia.com/PHPjc/320956.htmlwww.bkjia.comtruehttp://www.bkjia.com/PHPjc/320956.htmlTechArticle code is as follows: // get the current script URL function get_php_url () {if (! Empty ($ _ SERVER ["REQUEST_URI"]) {$ scriptName = $ _ SERVER ["REQUEST_URI"]; $ nowurl = $ SC...