<?php

    $strings  = array("http://w...content-available-to-author-only...e.com", "mailto:hey@there.nyc", "tel:951261412", "hyyy://www.me.com");

foreach($strings as $string){

if (preg_match('/^((?:tel|https?|mailto):.*?)$/im', $string)) {
	echo $string ."\n";
}else{
echo "No Match for : $string \n";
}
}