How to search inside a string !?

Anon

I am reading data from a file, each row is inserted into an array;
what I need is to read this strings and search for a word.

The file I am reading is in this format:

username:cryptedpassword

I need to check for username and see if it is already present.

I have looked at PHP string and Array function and the only that could do somethig seems to be "sscanf", is this the more appropriate for this purpose ?

How can I set it for extract only what is typed before the ":" symbol ?

Thank you

Anon

if your file is like this

user:pass
user:pass
user:pass
and so on.......

First read the whole file into $something then:

$stuff = ereg_replace(":[^\n]\n", "\n", $something);

then you can:

$array = explode("\n", $stuff);

The stuff will be an array with only the stuff the before the :

Hope this helps

Andreas

Anon

If the file you are searching is large(50 megs or something like that), you are not going to want to read it into memory , you are going to want to do a while (!feof($fp)){} type of structure and process it one line at a time with fgets.

If it is smaller (less than a meg or so) then read the whole thing in with:

$fp=fopen($filename,"r");
$body=fread($fp,filesize($filename));
then you can just use the single line:

if (eregi("$name",$body)){
print "Yep, they're here";
}
else{
print "nope, they're not here";
}

Anon

Actually, there's a function called split() that would work a little smoother than this...

You have one line of the file as an array item, you setup a for loop that loops through each array item, and each time, you use:

$line_data = split(":", trim($arrFileData[$i]));

Assuming your User/Pass file is like:
user:pass
user2:pass2
user3:pass3

That will create a new array for each line. The username will be $line_data[0], the password $line_data[1]. Then you can just say:

if ($username == $line_data[0]) {
  code here
}

Hope this helps...

Anon

Yes, thank you!

I think this is the better way.
Actually I am using the ergi function that works great...it should be easier but seems to work...

Thanks again

Fabio