Function to check and prefix http on url [modified].

This function will check the the given url has prefixed http or https. if it is not it will prefix httpon the given url.

function prefixHttpOnUrl($url= '', $prefix=''){

if ($url == '' OR $prefix=''){
return '';
}

if (substr($url, 0, 7) != 'http://' && substr($url, 0, 8) != 'https://'){

if($prefix =="http://"){
$url = 'http://'.$url;
}
else if($prefix =="https://"){
$url = 'http://'.$url;
}
else {
return '';
}
}

return $url;
}


prefixHttpOnUrl("www.phpqa.blogspot.com","http://") will return http://www.phpqa.blogspot.com

prefixHttpOnUrl("phpqa.blogspot.com","https://") will return https://phpqa.blogspot.com

prefixHttpOnUrl("http://phpqa.blogspot.com","http://") will return http://phpqa.blogspot.com

prefixHttpOnUrl("http://phpqa.blogspot.com","https://") will return http://phpqa.blogspot.com

enjoy PHP'ing