<?php
 
$log = <<<FIM
##################################################
----------------------------------------
Nome: nome_user,
Email: email@user.com,
-------------------------------
,
----------------------------------------
##################################################
FIM;
 
	$start = 'Email:';
	$end = ',';
 
	$pos1 = strpos( $log, $start );
	$pos2 = strpos( $log, $end, $pos1 );
	$block = trim( substr(
		$log, $pos1 + strlen( $start ),
		$pos2 - $pos1 - strlen( $start )
	) );
 
	echo $block;

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