[SOLVED] PHP url check - valid or 404?

[andrewgarn]

I've been looking at ways to check urls are valid. This current one just gives an error every time.

 

Requirements for the check are for a normal page to be valid, but a broken link and a 404 page NOT valid

 

$url = 'http://www.google.co.uk'';
echo $url;
$valid = @fsockopen("$url", 80, $errno, $errstr, 30);
if (!$valid) {
// Error Message
echo "URL not valid <br>";
?><meta http-equiv="Refresh" content="1; URL=register.php"><?
}    
else {

 

Anyone? I will continue looking for solutions

[andrewgarn]

This code appears to work to my specs. Can anyone confirm?

 

<?php
$url = 'www.google.co.uk';

$handle = @fopen($url,'r');
if($handle !== false){
   echo 'Exists';
}
else{
   echo "Doesn't";
} 
?>

[andrewgarn]

also could someone check this php function? I never seem to be good at ors in if functions...

 

<?php
if(!isset($_POST['username'] || $_POST['password'] || $email = $_POST['email']))
{
echo "Please complete all fields";
} 
else {
?> 

 

It gives: Parse error: parse error, unexpected T_BOOLEAN_OR, expecting ',' or ')' in register.php on line 64

[DarkWater]

You need to use a seperate isset() call for each variable:

if(!isset($_POST['username']) || !isset($_POST['password']) || !isset($email = $_POST['email']))) {

[andrewgarn]

You need to use a seperate isset() call for each variable:

if(!isset($_POST['username']) || !isset($_POST['password']) || !isset($email = $_POST['email']))) {

 

thanks, that fixed the synatax, but it doesnt actually work. I submit the form with empty fields and it still gets past the if function

 

<form name="login" method="post" action="register.php">
    <table border="0" width="225" align="center">
        <tr>
            <td width="219" bgcolor="#999999">
            <p align="center"><font color="white"><span style="font-size:12pt;"><b>Registration</b></span></font></p>
            </td>
        </tr>
        <tr>
            <td width="219">
                <table border="0" width="282" align="center">
                    <tr>
                        <td width="116"><span style="font-size:10pt;">Username:</span></td>
                        <td width="156"><input type="text" name="username"></td>
                    </tr>
                    <tr>
                        <td width="116"><span style="font-size:10pt;">Password:</span></td>
                        <td width="156"><input type="password" name="password"></td>
                    </tr>                
                    <tr>
                        <td width="116"><span style="font-size:10pt;">Email:</span></td>
                        <td width="156"><input type="text" name="email" maxlength="100"></td>
                    </tr>
    				<tr>
                        <td width="116"><span style="font-size:10pt;">Enable</span></td>
                        <td width="156"><SELECT NAME="track"><OPTION VALUE="Yes">Yes</OPTION><OPTION VALUE="No">No</OPTION></SELECT></td>
                    </tr>
                    <tr>
                        <td width="116"> </td>
                            <td width="156">
                                <p align="right"><input type="submit" name="submit" value="Submit"></p>
                            </td>
                    </tr>
                </table>
            </td>
        </tr>
        <tr>
            <td width="219" bgcolor="#999999"> </td>
        </tr>
    </table>
    </form>  

 

if(!isset($_POST['username']) || !isset($_POST['password']) || !isset($_POST['email'])) 
{
echo "Please complete all fields";
}  
else {

[andrewgarn]

Made it work a different way, not good php, but it works

 

if($_POST['username'] == NULL || $_POST['password'] == NULL || $_POST['email'] == NULL)