<?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);
 
	//substitui quebras de linha (\n), "retornos de carro" (\r) ou tabulações (\t), por um espaço
	$str = preg_replace('/[\n\r\t]/', ' ', $str);
 
	//remove qualquer espaço em branco duplicado
	$str = preg_replace('/\s(?=\s)/', '', $str);
 
	//Retira espaço no ínicio e final
	$str = trim($str);
 
 
 
echo $str;

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