Collection functions commonly used by PHP collection programs

Collection functions commonly used by PHP collection programs. On the php collection page, the most common one is to filter some special characters or collect and save the images in the content, next I will introduce you to some of the common functions when writing a php collection program. The most common function on the php collection page is to filter some special characters or collect and save the images in the content, next I will introduce some common functions when I write a php collection program.

After paying attention to the PHP collection program over the past few days, we found that it is so convenient to collect content using PHP. here we will summarize the frequently used collection functions for future use!

Convert each row and column of an HTML table into an array to collect table data.
Function getTdArray ($ 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 ("'([rn]) [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;
}

Returns all words in the string $ distinct = true to remove duplicates.
Function splitEnStr ($ 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];
}

", '",', $ Table );$ Table = str_replace (" "," {Tr} ", $ table );// Remove the HTML tag$ Table = preg_replace ("'<[/!] *? [^ <>] *?> 'Si "," ", $ table );// Remove the white space characters$ Table = preg_replace ("'([rn]) [s] +'", "", $ table );$ Table = str_replace ("", "", $ table );$ Table = str_replace ("", "", $ table );$ Table = explode (", {tr}", $ table );Array_pop ($ table );Return $ table;}

The code is as follows:

Get all link content and addresses Function getAllURL ($ code ){ Preg_match_all ('/"'] +) [" | ']? S * [^>] *> ([^>] +)/I ', $ code, $ arr ); Return array ('name' => $ arr [2], 'URL' => $ arr [1]); } Get all image addresses Function getImgSrc ($ code ){ $ Reg = "/] * src =" (http ://(. + )/(. + ). (jpg | gif | bmp | bnp | png) "/isU "; Preg_match_all ($ reg, $ code, $ img_array, PREG_PATTERN_ORDER ); Return $ img_array [1]; } Current script URL Function getSelfURL (){ 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 full-angle numbers into half-angle numbers 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 ("/[rn] {1,}/isU "," Rn ", $ txt ); Return $ txt; } Clear HTML tags Function clearHtml ($ str ){ $ Str = str_replace ('<', '<', $ str ); $ Str = str_replace ('>', '>', $ str ); Return $ str; } Convert relative paths to absolute paths Function relative2Absolute ($ 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; } Obtains the content in the specified tag. Function getTagData ($ str, $ start, $ end ){ If ($ start = ''| $ end = ''){ Return; } $ Str = explode ($ start, $ str ); $ Str = explode ($ end, $ str [1]); Return $ str [0]; } Convert each line of an HTML table to an array in CSV format Function getTrArray ($ table ){ $ Table = preg_replace ("' ] *?> 'Si ", '"', $ table ); $ Table = str_replace ("

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