$_GET[] method not working when used with hyperlink

I am trying to send an email to user (using PHP Mailer) to recover the forgotten password using the following hyperlink attached to email:

$emailBody = ",<br><br><p>Click this link to recover your password<br><a 
href='" . PROJECT_HOME . "reset_password.php?email=" . $user["email"] . 
"'>" . PROJECT_HOME . "reset_password.php?email=" . $user["email"] . "</a> 
<br><br></p>Regards,<br> Admin.</div>";

Ignore PROJECT HOME, it's local host.

This is working fine and suppose if the e-mail of the user is "ABC@gmail.com", the link sent to the user is "reset_passsword.php?email=ABC@gmail.com"

Now in the reset_password.php file, I've written the following php code but unfortunately the GET method isn't working. I tried echoing the email after getting it from $_GET but the output I get is: '..'

<?php
#include "dbConnection.php";
    if(@$_GET['q']==1){

    if(isset($_POST["reset-password"])) {
    $con = mysqli_connect("localhost", "root", "", "project");
    $email=@$_GET['email'];
    echo "Email: '.$email.'";
    echo $email;
    $sql = "UPDATE user SET password = '" . 
md5($_POST["member_password"]). "' WHERE email = $email";
    $result = mysqli_query($con,$sql);
    $success_message = "Password is reset successfully.";

}
}
?>

The form(in case anybody needs to see) is like this:

<form name="frmReset" id="frmReset" method="post" 
 action="reset_password.php?q=1" onSubmit="return 
 validate_password_reset();">
 <h1>Reset Password</h1>
     <?php if(!empty($success_message)) { ?>
     <div class="success_message"><?php echo $success_message; ?><?php 
  echo '<br><br>' ?></div>
<?php } ?>

<div id="validation-message">
    <?php if(!empty($error_message)) { ?>
<?php echo $error_message; ?><?php echo '<br><br>' ?>
<?php } ?>
</div>

<div class="field-group">
    <div><label for="Password">Password</label></div>
    <div>
    <input type="password" name="member_password" 
 id="member_password" class="input-field"></div>
</div>

<div class="field-group">
    <div><label for="email">Confirm Password</label></div>
    <div><input type="password" name="confirm_password" 
 id="confirm_password" class="input-field"></div>
</div>

<div class="field-group">
    <br>    <div><input type="submit" name="reset-password" 
 id="reset-password" value="Reset Password" class="form-submit-button"> 
</div>
</div>  
</form>