Re: string...

beware if you're using preg_match instead. regex using preg_match have to be enclosed by / so the same with preg_match would look like: preg_match("/^.*_[0-9]{4}\.jpg$/i", $file_name) and using preg_match meens that / is a special character and has to be backslashed if wanted by it's meening. and there's nothing like preg_matchi to check case-insensitive. this has to be done using modifiers after the ending /. in the example above it's i for case-insensitive. "Michael Virnstein" <michael.virnstein@brodos.de> schrieb im Newsbeitrag news:20020412114256.96992.qmail@pb1.pair.com... > wrong again: > eregi("^/*_[0-9]{4}\.jpg$", $file_name) > > now yo say, / at the beginning between 0 and unlimited times, the rest is > ok. > > try this, i rechecked my second example and saw that i did a \. at the > beginning. this was wrong, > because it'll search for a dot at the beginning. simply forget about the > backslash before the first dot. > This should finally work: > eregi("^.*_[0-9]{4}\.jpg$", $file_name) > > . is a special character and meens every character. so if you want . by it's > meening you have to > backslash it: \. > so what my ereg meens now, is the following: > any character at the beginning between 0 and unlimited times, followed by an > _, followed > by 4 characters between 0 and 9 followed by a dot, followed by jpg which has > to be at the end of the string. > > Michael > > "Jas" <jlgerfen@hotmail.com> schrieb im Newsbeitrag > news:20020411174558.72214.qmail@pb1.pair.com... > > Ok, I have tried all 3 examples and even tried a few variations that you > > have given me and so far nothing is getting displayed, is there a way to > > check for errors? here is the code I am working with: > > > > // second selection for main image on main page > > $dir_name = "/path/to/images/directory/"; > > $dir = opendir($dir_name); > > $file_lost .= "<p><FORM METHOD=\"post\" > > ACTION=\"done.php3\" > > NAME=\"images\"> > > <SELECT NAME=\"images\">"; > > while ($file_names = readdir($dir)) { > > if ($file_names != "." && $file_names !=".." && > > eregi("^/*_[0-9]{4}\.jpg$", $file_name)) { > > $file_lost .= "<OPTION VALUE=\"$file_names\" > > NAME=\"$file_names\">$file_names</OPTION>"; > > } > > } > > $file_lost .= "</SELECT><br><br><INPUT > > TYPE=\"submit\" NAME=\"submit\" > > VALUE=\"select\"></FORM></p>"; > > closedir($dir); > > > > > > "Michael Virnstein" <michael.virnstein@brodos.de> wrote in message > > news:20020411162144.73879.qmail@pb1.pair.com... > > > and i'd suggest using eregi instead, because then also .Jpg or .JPG will > > be > > > found. > > > > > > "Michael Virnstein" <michael.virnstein@brodos.de> schrieb im Newsbeitrag > > > news:20020411100433.83674.qmail@pb1.pair.com... > > > > see what's wrong here: > > > > ereg('(^[0-1231]$).jpg$',$file_name) > > > > > > > > [] meens a group of characters, so in your case > > > > 0,1,2 and 3 are valid characters. you haven't defined any > > > > modifer like ?,*,+ or{}, so one of this characters has to > > > > be found exactly one time. you're using ^ outside the [] so it meens > the > > > > beginning of the string. > > > > in your case none of these characters inside the [] can be found at > the > > > > beginning of the string. > > > > then you use $ after the []. $ meens the end of the string. none of > the > > > > characters in the [] matches at the end of the string. > > > > so this would be right: > > > > > > > > ereg('_[0-9]{4}\.jpg$', $file_name); > > > > > > > > so this meens: > > > > the beginning of the string doesn't matter, because we have not > > specified > > > ^ > > > > at the beginning. > > > > there has to be an underscore, followed by 4 characters between 0 and > 9, > > > > followed by an dot, > > > > followed by j, followd by p, followed by g. g has to be at the end of > > the > > > > string, because of the $. > > > > or you can use: > > > > ereg('^\.*_[0-9]{4}\.jpg$', $file_name); > > > > > > > > this will meen : > > > > any characters at the beginning between 0 and unlimited times, then > > > followed > > > > by an underscore, > > > > followed by 4 characters between 0 and 9, followed by a dot, followed > by > > > > jpg. same as above > > > > though. But the * is a real performance eater so it could be slightly > > > faster > > > > if you're using the first example. > > > > > > > > > > > > > > > > "Jas" <jlgerfen@hotmail.com> schrieb im Newsbeitrag > > > > news:20020410222934.89594.qmail@pb1.pair.com... > > > > > I hate to say it but that didn't work, I have been trying different > > > > > variations of the same ereg('_(^90-9{4}$).jpg$',$file_names) and > > nothing > > > > > seems to work for me, I have also been looking at the ereg and > > preg_ereg > > > > > functions but they don't seem to make sense to me, here is the code > as > > a > > > > > whole if this helps: > > > > > // query directory and place results in select box > > > > > $dir_name = "/path/to/images/directory/on/server/"; // path to > > directory > > > > on > > > > > server > > > > > $dir = opendir($dir_name); // open the directory in question > > > > > $file_lost .= "<p><FORM METHOD=\"post\" > > > > > ACTION=\"done.php3\" > > > > NAME=\"ad01\"> > > > > > <SELECT NAME=\"image_path\">"; > > > > > while ($file_names = readdir($dir)) { > > > > > if ($file_names != "." && $file_names !=".." > > > > > && > > > > ereg('_(^[0-9]{4}.jpg$)', > > > > > $file_names)) // filter my contents > > > > > { > > > > > $file_lost .= "<OPTION VALUE=\"$file_names\" > > > > > NAME=\"$file_names\">$file_names</OPTION>"; > > > > > } > > > > > } > > > > > $file_lost .= "</SELECT><br><br><INPUT > > > > > TYPE=\"submit\" > > NAME=\"submit\" > > > > > VALUE=\"select\"></FORM></p>"; > > > > > closedir($dir); > > > > > What I am trying to accomplish is to list the contents of a > directory > > in > > > > > select box but I want to filter out any files that dont meet this > > > criteria > > > > > *_4444.jpg and nothing is working for me, any help or good tutorials > > on > > > > > strings would be great. > > > > > Jas > > > > > "Erik Price" <pricee@hhbrown.com> wrote in message > > > > > > > > > > news:3484EF79-4CD0-11D6-BC9F-0050E4857868@hhbrown.com... > > > > > > > > > > > > On Thursday, April 11, 2002, at 05:59 AM, jas wrote: > > > > > > > > > > > > > Is this a correct string to show only files that look like so: > > > > > > > *_2222.jpg > > > > > > > if ($file_names != "." && $file_names > > > > > > > !=".." && > > > > > > > ereg('(^[0-1231]$).jpg$',$file_name)) > > > > > > > Any help would be great. > > > > > > > > > > > > preg_match(/^_[0-9]{4,4}\.jpg$/, $file_name) should match any > string > > > > > > that starts with an underscore, is followed by exactly four > digits, > > > and > > > > > > then a ".jpg". It will not match anything but this exact string. > > > > > > > > > > > > > > > > > > Erik > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > ---- > > > > > > > > > > > > Erik Price > > > > > > Web Developer Temp > > > > > > Media Lab, H.H. Brown > > > > > > pricee@hhbrown.com > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > >