php - MySQL update user code -


i have form updates users information upon submit. current setup allows form submitted if fields filled out. need create if statements each field says if populated, update, if not, dont.

i have password field listed below describes want each , every field, wasnt sure if list multiple variables inside if or have write separate if statements , select database every time

if($password != '') {   if($password != $password2) {     $error = '<div class="error_message">attention! passwords did not match.</div>';   }    if(strlen($password) < 5) {     $error = '<div class="error_message">attention! password must @ least 5 characters.</div>';   }    if($error == '') {     $sql = "update login_users                 set restricted = '$restrict',                     company_name = '$company_name',                     contact = '$contact',                     email = '$email',                     user_level = '$level',                     password = md5('$password')               user_id = '$id'";     $query = mysql_query($sql) or die("fatal error: ".mysql_error());      echo "<h2>updated</h2>";     echo "<div class='success_message'>user information (and password) updated user id <b>$id ($company_name)</b>.</div>";     echo "<h2>what now?</h2><br />";     echo "<a href='xxxxxxxx'>&laquo; admin panel</a> | go <a href='user_edit.php'>edit users</a> page.</li>";   }

here more of code

    if(trim($id) == '1') {     $error = '<div class="error_message">attention! cannot edit main administrator, use database.</div>'; } else if(trim($company_name) == '') {     $error = '<div class="error_message">attention! must enter company name.</div>'; } else if(trim($contact) == '') {     $error = '<div class="error_message">attention! must enter contact name.</div>'; } else if(!isemail($email)) {     $error = '<div class="error_message">attention! have entered invalid e-mail address, try again.</div>'; } else if(trim($level) == '') {     $error = '<div class="error_message">attention! no user level has been selected.</div>'; }

i need create if statements each field says if populated, update, if not, dont.

you can build sql statement go. along lines of:

$sqlcols = ''; $error = '';  // password if ($password != '') {     if ($password == $password2) {         if (strlen($password) > 4) {             $sqlcols .= "password = md5('".mysql_real_escape_string($password)."'),  ";         } else {             $error .= '<div class="error_message">attention! password must @ least 5 characters.</div>';         }     } else {         $error .= '<div class="error_message">attention! passwords did not match.</div>';     } }   // email if ($email != '') {     if (isvalidemail($email)) {         $sqlcols .= "email ='".mysql_real_escape_string($password)."', ";     } else {         $error .= '<div class="error_message">attention! email invalid.</div>';     } }  if ($error == '') {     $sql = "update login_users              set ".trim($sqlcols, ', ')."             user_id = '$id'";      // etc... }

in near future, switch on pdo improved performance , better protection against sql injection.


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