Use php regular expressions to extract the image in the document and replace and move the image directory.

When uploading images, the uploaded images are not all used. Therefore, you can save the uploaded images to a temporary folder. When publishing an article, you can move the actually used images to a useful directory, in this way, you can regularly clear useless directories.

 

The code is as follows:

Copy code

// Transfer the image in the temporary folder $ Imgssss = preg_match_all ("/linshi/[^ s '" ]+.jpg | png | gif | jpeg {1}/ui ", $ content, $ imgss ); $ I = 1; Foreach ($ imgss as $ aimg ){ If (is_string ($ aimg )){ If (file_exists ($ aimg )){ $ Newdir = "upload/". date ("ymdhis ")."/"; If (! File_exists ($ newdir )){ Mkdir ($ newdir, 0755, true );     } $ Newname = $ newdir. date ("ymdhis"). $ I. ".". pathinfo ($ aimg, PATHINFO_EXTENSION ); Rename ($ aimg, $ newname ); $ Content = str_replace ($ aimg, $ newname, $ content );     } $ I ++; } Elseif (is_array ($ aimg )){ Foreach ($ aimg as $ imga ){ If (file_exists ($ imga )){ $ Newdir = "upload/". date ("ymdhis ")."/"; If (! File_exists ($ newdir )){ Mkdir ($ newdir, 0755, true );     } $ Newname = $ newdir. date ("ymdhis"). $ I. ".". pathinfo ($ imga, PATHINFO_EXTENSION ); Rename ($ imga, $ newname ); $ Content = str_replace ($ imga, $ newname, $ content );     } $ I ++;     }     }     }

It is easier to move a single image:

The code is as follows:	Copy code
$ Newdir = "upload/". date ("ymdhis ")."/"; If (! File_exists ($ newdir )){ Mkdir ($ newdir, 0755, true ); } $ Newname = $ newdir. "s _". date ("ymdhis"). ".". pathinfo ($ upimgurl, PATHINFO_EXTENSION ); Rename ($ upimgurl, $ newname );