<?php

$str="Apelido: 

	  	
	  	Fulano de Tal";
	
	//retira os termos indesejados
	$patterns = array();
	$patterns[0] = '/Apelido/';
	$patterns[1] = '/:/';
	$replacements = array();
	$replacements[1] = '';
	$replacements[0] = '';
	$str = preg_replace($patterns, $replacements, $str);
	
	$str = preg_replace(array('/\s{2,}/', '/[\n\r\t]/',), array(" ", " "), $str);
	
	$str = trim($str);
	
echo $str;