how to get string in among of lines using php - php

Question

I am having a file like settings.txt.
which contains some lines like
SET VERSION=3
SET BACKUP_DRIVE=D:\
SET BACKUP_DIRECTORY=BACKUP\
SET HOURLY_DIRECTORY=HOURLY\
SET INPUT_DIRECTORY=C:\MySQL\Data\CDR\
SET username=username
SET password=password
this file is at other location or on other server. I have get this file using ...
$frserver = file_get_contents("http://ip is here/cdr/settings.txt");
I used this
$File = file_get_contents("http://ip is heresettings.txt");
$FileArr = explode("\r\n",$File);
echo $FileArr[5]; // This will output: SET username=desired username
and get "SET username=desired username" bt i want only "desired username"..just this issue left nw
Now I am unable to get username and password from it.
how to get username and password so i can compare them in db...

Answer 1

Assuming
$frserver = 'SET VERSION=3
SET BACKUP_DRIVE=D:\
SET BACKUP_DIRECTORY=BACKUP\
SET HOURLY_DIRECTORY=HOURLY\
SET INPUT_DIRECTORY=C:\MySQL\Data\CDR\
SET username=username
SET password=password';
the whole solution is just these 2 lines:
preg_match_all('~^SET\s+([^=]+)=(.*)$~m', $frserver, $matches);
$params = array_combine($matches[1], $matches[2]);
So after that you can retrieve your variables as $params['username'] and $params['password'] correspondingly.
Live example on ideone: http://ideone.com/pn2Wbp

Answer 2

$File = file_get_contents("Settings.txt");
$FileArr = explode("\r\n",$File);
echo $FileArr[5]; // This will output: SET username=username
Explained:
This code will break up the contents of the file specified by new line breaks represented by \r\n which is the windows format for new line.. HTML equivalent: <br>
To See the full array:
print_r($FileArr);

Answer 3

If you just need to get data from a text file, I recommend using a csv, like this:
key,value
VERSION,3
BACKUP_DRIVE,D:\
BACKUP_DIRECTORY,BACKUP\
HOURLY_DIRECTORY,HOURLY\
INPUT_DIRECTORY,C:\MySQL\Data\CDR\
username,username
password,password
Then you can do something like this to get all these keys and values into a PHP array:
$contents = file_get_contents('http://ip is here/cdr/settings.txt');
$lines = explode("\n",$contents);
foreach($lines as $line) {
$pair = str_getcsv($line);
$settings[] = array($pair[0]=>$pair[1]);
}
// print_r to see the array
print_r($settings);

Answer 4

You are probably best served using file() to fetch the data, such that the data returned is in an array already (one element per line of text):
$raw_array = file('http://ip is here/cdr/settings.txt');
Then perhaps run an array walk to set everything to a usable array
$final_array = array();
array_walk($raw_array, function($value) use $final_array {
$value = trim($value); // trim newlines
$value = str_replace('SET ', '', $value); // remove 'SET '
$value_array = explode('=', $value); // break up value on '='
$final_array[$value_array[0]] = $value_array[1]; // set key/value in $final_array
});
For PHP version < 5.3 where there is not support for anonymous functions, you need to use a named function here, so it might look like this:
$final_array = array();
array_walk($raw_array, 'parse_raw_array', $final_array);
function parse_raw_array ($value, $key_not_used, $final_array) {
$value = trim($value); // trim newlines
$value = str_replace('SET ', '', $value); // remove 'SET '
$value_array = explode('=', $value); // break up value on '='
$final_array[$value_array[0]] = $value_array[1]; // set key/value in $final_array
});
Then simply access key/values from $final_array as needed
$username = $final_array['username'];
$password = $final_array['password'];
That being said, passing your MySQL credentials (I assume that is what this is) in the clear like that is probably not a great idea.