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Snippet Name: Check If Domain Exists

Description: Checks if a domain is reachable on the internet.

Comment: (none)

Language: PHP
Highlight Mode: PHP
Last Modified: February 26th, 2009

<?PHP
 
FUNCTION url_exists($strURL) {
    $resURL = curl_init();
    curl_setopt($resURL, CURLOPT_URL, $strURL);
    curl_setopt($resURL, CURLOPT_BINARYTRANSFER, 1);
    curl_setopt($resURL, CURLOPT_HEADERFUNCTION, 'curlHeaderCallback');
    curl_setopt($resURL, CURLOPT_FAILONERROR, 1);
 
    curl_exec ($resURL);
 
    $intReturnCode = curl_getinfo($resURL, CURLINFO_HTTP_CODE);
    curl_close ($resURL);
 
    IF ($intReturnCode != 200 && $intReturnCode != 302 && $intReturnCode != 304) {
       RETURN FALSE;
    } ELSE {
        RETURN TRUE;
    }
}
 
 
 
 
OR.................
 
FUNCTION is_valid_url($url)
{
    $url = PREG_REPLACE('~^https?://~i', NULL, $url);
    RETURN @CHECKDNSRR($url);
}
 
?>


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