How to loop through a text file in PHP to find a specific line of text

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I have made a program that lets you enter the username and password then it stores it in a text file and when i want to login i want to make it so it loops through the text file that has the usr/pass in to find if you entered your credentials in correctly. I'm not sure how to do this. please can somebody help

What I have tried:

i do not know how to do it!!!!

Posted 29-Sep-18 6:09am

Member 13915301

Updated 1-Oct-18 1:44am

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Comments

Mohibur Rashid 29-Sep-18 20:29pm

How about read line by line?

summiya1 1-Oct-18 7:46am

Please don't save user information specially username & password in textfile. Its not recommended and you can use Sqlite.

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summiya1 · Answer 1 · 2018-10-01T01:45:00

if (isset($_POST['submit_btn']))
{
$username = $_POST['name'];
$password = $_POST['pwd'];
if (empty($username))
{
echo "Please enter a username";
} else $username = $username;

if (empty($password))
{
echo "Please enter a password";
} else $password = $password;
$text = $username . "," . $password . "\
";
$fp = fopen('accounts.txt', 'a+');
$path = 'accounts.txt';
if (file_exists($path))
{
$contents = file_get_contents($path);
$contents = explode("\
", $contents);
$users = array();
foreach ($contents as $value) {
$user = explode(',', $value);
$users[$user[0]] = $user[1];
}
if (isset($users[$_POST['name']])) {
echo "that user already exists please enter a different user name";
}
}
else
{
echo "NO";
}
if(!empty($username) && !empty($password) && fwrite($fp, $text) && !isset($users[$_POST['name']])) {
header('Location: login.html');
}
fclose ($fp);
$path = 'accounts.txt';
}
?>