[SOLVED] Quick Question

[TheJoey]

Is there a way to tell php collect information before a certain point?

For example Go-go-go-stop-go-go-go

 

after stop it wouldnt display anymore information, and is it possible to do this threw use of a $find.

 

[tommyda]

doesnt make sense

[newbtophp]

preg_match

[lockdownd7]

You may could use output buffering...

[Garethp]

preg_match('~^(.+)stop~', $input, $find);

[TheJoey]

output buffering?

Sorry if i am unclear.

What i mean is that i have a login script which is retreiving login information from a .txt but the other data in the txt seems to conflict and allways give me a "wrong password error"

 

 

[TheJoey]

preg_match('~^(.+)stop~', $input, $find);

 

thanks gareth but could you explain what this is trying to do.

[Garethp]

Basically it takes $input, then it gets EVERYTHING from the beginning of the $input up until stop. It then stores that in the array $find.

 

You may not believe it, but regex is one of the most powerful tools of PHP. You should look into these links

 

http://au2.php.net/preg_match

http://au2.php.net/preg_match_all

http://au2.php.net/preg_replace

http://www.regular-expressions.info/

[TheJoey]

thank you

when i tried impletmenting this into my code i got this.

Warning: preg_match() expects parameter 2 to be string, array given in C:\xampplite\htdocs\Trial\New Folder\examplelogin1\php.php on line 7

 

line 7 being

preg_match('~^(.+)||~', $lines, $find)

$lines = file("users.txt",FILE_IGNORE_NEW_LINES); // read the lines into an array
$find = "$username:$password"; // form a string like you expect it to be in the array
preg_match('~^(.+)||~', $lines, $find);

[Alex]

The source of the file must be in a string, not in an array, file() returns an array.

[TheJoey]

im using  arrays to use the collected data,  :o :o

[trq]

Why don't you post your code?

[TheJoey]

Yeh ofcourse sorry about not posting thought i did.

<?php 
session_start();
$username = $_POST['username'];
$password = $_POST['password'];
$lines = file("users.txt",FILE_IGNORE_NEW_LINES); // read the lines into an array
$find = "$username:$password"; // form a string like you expect it to be in the array
preg_match('~^(.+)||~', $lines, $find);
if(in_array($find,$lines)){
   $_SESSION['logged_in'] = true;
   echo 'Logged in';
} else {
   echo 'You entered a wrong password';
}
?>