Php collects images in articles and replaces them with local ones (implementation code)

This article is a detailed analysis of the implementation code of replacing image acquisition with local in php collection articles. For more information, see The code is as follows:

/**
* Obtain the image path in the replacement document.
* @ Param string $ xstr content
* @ Param string $ name of the photo file created by keyword
* @ Param string $ oriweb URL
* @ Return string
*
*/
Function replaceimg ($ xstr, $ keyword, $ oriweb ){

// Save path
$ D = date ('ymmd', time ());
$ Dirslsitss = '/var/www/weblist/uploads/'. $ keyword. '/'. $ d; // whether the category exists
If (! Is_dir ($ dirslsitss )){
@ Mkdir ($ dirserver load balancer, 0777 );
}

// Match the image's src
Preg_match_all ('#] *> # I', $ xstr, $ match );

Foreach ($ match [1] as $ imgurl ){

$ Imgurl = $ imgurl;

If (is_int (strpos ($ imgurl, 'http '))){
$ Arcurl = $ imgurl;
} Else {
$ Arcurl = $ oriweb. $ imgurl;
}
$ Img = file_get_contents ($ arcurl );


If (! Empty ($ img )){

// Save the image to the server
$ Fileimgname = time (). "-". rand (, 9999). ". jpg ";
$ Filecachs = $ dirslsitss. "/". $ fileimgname;
$ Fanhuistr = file_put_contents ($ filecachs, $ img );
$ Saveimgfile = "/uploads/$ keyword". "/". $ d. "/". $ fileimgname;


$ Xstr = str_replace ($ imgurl, $ saveimgfile, $ xstr );
}
}
Return $ xstr;
}