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	<title>SoyLaWeb.com &#187; Tips</title>
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		<item>
		<title>Revelar contraseñas en Firefox</title>
		<link>http://www.soylaweb.com/revelar-contrasenas-en-firefox/</link>
		<comments>http://www.soylaweb.com/revelar-contrasenas-en-firefox/#comments</comments>
		<pubDate>Sat, 06 Feb 2010 06:23:25 +0000</pubDate>
		<dc:creator>Nacho</dc:creator>
				<category><![CDATA[Curiosidades]]></category>
		<category><![CDATA[Internet]]></category>
		<category><![CDATA[Navegadores]]></category>
		<category><![CDATA[Contraseñas]]></category>
		<category><![CDATA[Mozilla Firefox]]></category>
		<category><![CDATA[Tips]]></category>

		<guid isPermaLink="false">http://www.soylaweb.com/?p=343</guid>
		<description><![CDATA[Leyendo el blog 86400.es (lo descubrí hace poco, está muy interesante) me he encontrado con un pequeño artículo que explica cómo revelar las contraseñas que tienes guardadas en el navegador Firefox. ¿Y esto para que me sirve? En mi caso necesitaba recordar una contraseña que no tenía por ningún lado, pero sí estaba guardada en [...]]]></description>
			<content:encoded><![CDATA[<p>Leyendo el blog <strong><a href="http://86400.es">86400.es</a></strong> (lo descubrí hace poco, está muy interesante) me he encontrado con un pequeño artículo que explica <strong>cómo revelar las contraseñas</strong> que tienes guardadas en el navegador Firefox.</p>
<p>¿Y esto para que me sirve? En mi caso necesitaba <strong>recordar una contraseña</strong> que no tenía por ningún lado, pero sí estaba guardada en el navegador. ¿Solución? Debes entrar en la página donde está la contraseña (ejemplo un panel de admin de hosting) y cuando ves el cuadrito con los asteriscos, debes pegar el siguiente código en el navegador y presionar entrar: <strong><a href="http://www.soylaweb.com/codigopass.txt">VER CÓDIGO</a></strong></p>
<p>Simple y funcional, ¿no?.</p>
<p><strong>Visto en:</strong> <a href="http://86400.es/2007/11/21/como-revelar-las-contrasenas-en-firefox/">86400.es</a></p>
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		<title>Manejo de cadenas con PHP</title>
		<link>http://www.soylaweb.com/manejo-de-cadenas-con-php/</link>
		<comments>http://www.soylaweb.com/manejo-de-cadenas-con-php/#comments</comments>
		<pubDate>Wed, 22 Apr 2009 04:32:16 +0000</pubDate>
		<dc:creator>Nacho</dc:creator>
				<category><![CDATA[Programación]]></category>
		<category><![CDATA[PHP]]></category>
		<category><![CDATA[Tips]]></category>

		<guid isPermaLink="false">http://www.soylaweb.com/?p=62</guid>
		<description><![CDATA[En las siguientes líneas voy a mostrar algunas funciones importantes de PHP para el manejo de cadenas o strings. Son funciones simples, y con pequeños ejemplos que tú mismo podrás transformar en grandes cosas. Sin duda, unos pequeños tips para los más novatos en el mundo de la programación PHP. Comenzaré diciéndoles que PHP tiene [...]]]></description>
			<content:encoded><![CDATA[<p>En las siguientes líneas voy a mostrar algunas funciones importantes de PHP para el manejo de cadenas o strings. Son funciones simples, y con pequeños ejemplos que tú mismo podrás transformar en grandes cosas. Sin duda, unos pequeños tips para los más novatos en el mundo de la programación PHP.</p>
<p>Comenzaré diciéndoles que PHP tiene una enorme cantidad de funciones para manejar cadenas, las que están disponibles <a href="http://cl.php.net/manual/es/book.strings.php">en este enlace</a>.</p>
<p><strong>md5()</strong><br />
Una función muy útil para el manejo de contraseñas. Devuelve el hash MD5 de una cadena, encriptándolo.</p>
<p><strong>Ejemplo:</strong></p>
<div class="igBar"><span id="lphp-8"><a href="#" onclick="javascript:showPlainTxt('php-8'); return false;">Clic para ver Texto Plano</a></span></div>
<div class="syntax_hilite"><span class="langName">PHP:</span>
<div id="php-8">
<div class="php">
<ol>
<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;color:#3A6A8B;">
<div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"><span style="color:#000000; font-weight:bold;">&lt;?php</span></div>
</li>
<li style="font-weight: bold;color:#26536A;">
<div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"><span style="color:#0000FF;">$cadena</span> = <span style="color:#FF0000;">"miPassword"</span>;</div>
</li>
<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;color:#3A6A8B;">
<div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"><a href="http://www.php.net/echo"><span style="color:#000066;">echo</span></a> <a href="http://www.php.net/md5"><span style="color:#000066;">md5</span></a><span style="color:#006600; font-weight:bold;">&#40;</span><span style="color:#0000FF;">$cadena</span><span style="color:#006600; font-weight:bold;">&#41;</span>;</div>
</li>
<li style="font-weight: bold;color:#26536A;">
<div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"><span style="color:#000000; font-weight:bold;">?&gt;</span> </div>
</li>
</ol>
</div>
</div>
</div>
<p></p>
<p><span id="more-62"></span><strong>strlen()</strong><br />
Esta función nos entrega la cantidad de caracteres que posee una cadena.}</p>
<p><strong>Ejemplo:</strong></p>
<div class="igBar"><span id="lphp-9"><a href="#" onclick="javascript:showPlainTxt('php-9'); return false;">Clic para ver Texto Plano</a></span></div>
<div class="syntax_hilite"><span class="langName">PHP:</span>
<div id="php-9">
<div class="php">
<ol>
<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;color:#3A6A8B;">
<div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"><span style="color:#000000; font-weight:bold;">&lt;?php</span></div>
</li>
<li style="font-weight: bold;color:#26536A;">
<div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"><span style="color:#0000FF;">$cadena</span> = <span style="color:#FF0000;">"Paralelepipedo"</span>;</div>
</li>
<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;color:#3A6A8B;">
<div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"><a href="http://www.php.net/echo"><span style="color:#000066;">echo</span></a> <span style="color:#FF0000;">"$cadena tiene "</span>.<a href="http://www.php.net/strlen"><span style="color:#000066;">strlen</span></a><span style="color:#006600; font-weight:bold;">&#40;</span><span style="color:#0000FF;">$cadena</span><span style="color:#006600; font-weight:bold;">&#41;</span>.<span style="color:#FF0000;">" caracteres."</span>;</div>
</li>
<li style="font-weight: bold;color:#26536A;">
<div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"><span style="color:#000000; font-weight:bold;">?&gt;</span> </div>
</li>
</ol>
</div>
</div>
</div>
<p></p>
<p><strong>strstr()</strong><br />
Esta función busca y encuentra la primera aparición de un string.</p>
<p><strong>Ejemplo:</strong></p>
<div class="igBar"><span id="lphp-10"><a href="#" onclick="javascript:showPlainTxt('php-10'); return false;">Clic para ver Texto Plano</a></span></div>
<div class="syntax_hilite"><span class="langName">PHP:</span>
<div id="php-10">
<div class="php">
<ol>
<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;color:#3A6A8B;">
<div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"><span style="color:#000000; font-weight:bold;">&lt;?php</span></div>
</li>
<li style="font-weight: bold;color:#26536A;">
<div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"><span style="color:#0000FF;">$nombre</span> = <span style="color:#FF0000;">"Ignacio Sarmiento"</span>;</div>
</li>
<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;color:#3A6A8B;">
<div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"><span style="color:#0000FF;">$cadena</span> = <a href="http://www.php.net/strstr"><span style="color:#000066;">strstr</span></a><span style="color:#006600; font-weight:bold;">&#40;</span><span style="color:#0000FF;">$nombre</span>, <span style="color:#FF0000;">'S'</span><span style="color:#006600; font-weight:bold;">&#41;</span>;</div>
</li>
<li style="font-weight: bold;color:#26536A;">
<div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"><a href="http://www.php.net/echo"><span style="color:#000066;">echo</span></a> <span style="color:#0000FF;">$cadena</span>;</div>
</li>
<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;color:#3A6A8B;">
<div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"><span style="color:#000000; font-weight:bold;">?&gt;</span> </div>
</li>
</ol>
</div>
</div>
</div>
<p></p>
<p><strong>substr()</strong><br />
Devuelve una parte de la cadena como primer parámetro. Luego presenta otros dos parámetros que son: la posición de inicio, y el largo de la cadena (opcional).</p>
<p><strong>Ejemplo:</strong></p>
<div class="igBar"><span id="lphp-11"><a href="#" onclick="javascript:showPlainTxt('php-11'); return false;">Clic para ver Texto Plano</a></span></div>
<div class="syntax_hilite"><span class="langName">PHP:</span>
<div id="php-11">
<div class="php">
<ol>
<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;color:#3A6A8B;">
<div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"><span style="color:#000000; font-weight:bold;">&lt;?php</span></div>
</li>
<li style="font-weight: bold;color:#26536A;">
<div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;">&nbsp;</div>
</li>
<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;color:#3A6A8B;">
<div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"><span style="color:#0000FF;">$nombre</span> = <span style="color:#FF0000;">"Ignacio Sarmiento Andonaegui"</span>;</div>
</li>
<li style="font-weight: bold;color:#26536A;">
<div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;">&nbsp;</div>
</li>
<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;color:#3A6A8B;">
<div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"><span style="color:#0000FF;">$cadena1</span> = <a href="http://www.php.net/substr"><span style="color:#000066;">substr</span></a><span style="color:#006600; font-weight:bold;">&#40;</span><span style="color:#0000FF;">$nombre</span>,<span style="color:#CC66CC;color:#800000;">2</span><span style="color:#006600; font-weight:bold;">&#41;</span>;</div>
</li>
<li style="font-weight: bold;color:#26536A;">
<div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"><span style="color:#0000FF;">$cadena2</span> = <a href="http://www.php.net/substr"><span style="color:#000066;">substr</span></a><span style="color:#006600; font-weight:bold;">&#40;</span><span style="color:#0000FF;">$nombre</span>,<span style="color:#CC66CC;color:#800000;">8</span><span style="color:#006600; font-weight:bold;">&#41;</span>;</div>
</li>
<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;color:#3A6A8B;">
<div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"><span style="color:#0000FF;">$cadena3</span> = <a href="http://www.php.net/substr"><span style="color:#000066;">substr</span></a><span style="color:#006600; font-weight:bold;">&#40;</span><span style="color:#0000FF;">$nombre</span>,<span style="color:#CC66CC;color:#800000;">12</span><span style="color:#006600; font-weight:bold;">&#41;</span>;</div>
</li>
<li style="font-weight: bold;color:#26536A;">
<div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;">&nbsp;</div>
</li>
<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;color:#3A6A8B;">
<div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"><a href="http://www.php.net/echo"><span style="color:#000066;">echo</span></a> <span style="color:#0000FF;">$cadena1</span>; <a href="http://www.php.net/echo"><span style="color:#000066;">echo</span></a><span style="color:#FF0000;">"&lt;br /&gt;"</span>;</div>
</li>
<li style="font-weight: bold;color:#26536A;">
<div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"><a href="http://www.php.net/echo"><span style="color:#000066;">echo</span></a> <span style="color:#0000FF;">$cadena2</span>; <a href="http://www.php.net/echo"><span style="color:#000066;">echo</span></a><span style="color:#FF0000;">"&lt;br /&gt;"</span>;</div>
</li>
<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;color:#3A6A8B;">
<div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"><a href="http://www.php.net/echo"><span style="color:#000066;">echo</span></a> <span style="color:#0000FF;">$cadena3</span>;</div>
</li>
<li style="font-weight: bold;color:#26536A;">
<div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;">&nbsp;</div>
</li>
<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;color:#3A6A8B;">
<div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"><span style="color:#000000; font-weight:bold;">?&gt;</span> </div>
</li>
</ol>
</div>
</div>
</div>
<p></p>
<p><strong>trim()</strong><br />
Elimina los espacios en blanco que se encuentran al principio y al final de una cadena.</p>
<p><strong>Ejemplo:</strong></p>
<div class="igBar"><span id="lphp-12"><a href="#" onclick="javascript:showPlainTxt('php-12'); return false;">Clic para ver Texto Plano</a></span></div>
<div class="syntax_hilite"><span class="langName">PHP:</span>
<div id="php-12">
<div class="php">
<ol>
<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;color:#3A6A8B;">
<div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"><span style="color:#000000; font-weight:bold;">&lt;?php</span></div>
</li>
<li style="font-weight: bold;color:#26536A;">
<div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;">&nbsp;</div>
</li>
<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;color:#3A6A8B;">
<div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"><span style="color:#0000FF;">$nombre</span> = <span style="color:#FF0000;">" Ignacio N. Sarmiento Andonaegui&nbsp; "</span>;</div>
</li>
<li style="font-weight: bold;color:#26536A;">
<div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"><span style="color:#0000FF;">$cadena</span> = <a href="http://www.php.net/trim"><span style="color:#000066;">trim</span></a><span style="color:#006600; font-weight:bold;">&#40;</span><span style="color:#0000FF;">$nombre</span><span style="color:#006600; font-weight:bold;">&#41;</span>;</div>
</li>
<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;color:#3A6A8B;">
<div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"><a href="http://www.php.net/echo"><span style="color:#000066;">echo</span></a> <span style="color:#0000FF;">$cadena</span>;</div>
</li>
<li style="font-weight: bold;color:#26536A;">
<div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;">&nbsp;</div>
</li>
<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;color:#3A6A8B;">
<div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"><span style="color:#000000; font-weight:bold;">?&gt;</span> </div>
</li>
</ol>
</div>
</div>
</div>
<p></p>
<p><strong>strtoupper()</strong><br />
Convierte una cadena de texto a mayúsculas.</p>
<p><strong>Ejemplo:</strong></p>
<div class="igBar"><span id="lphp-13"><a href="#" onclick="javascript:showPlainTxt('php-13'); return false;">Clic para ver Texto Plano</a></span></div>
<div class="syntax_hilite"><span class="langName">PHP:</span>
<div id="php-13">
<div class="php">
<ol>
<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;color:#3A6A8B;">
<div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"><span style="color:#000000; font-weight:bold;">&lt;?php</span></div>
</li>
<li style="font-weight: bold;color:#26536A;">
<div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;">&nbsp;</div>
</li>
<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;color:#3A6A8B;">
<div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"><span style="color:#0000FF;">$nombre</span> = <span style="color:#FF0000;">"bienvenidos a soylaweb.com"</span>;</div>
</li>
<li style="font-weight: bold;color:#26536A;">
<div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"><span style="color:#0000FF;">$cadena</span> = <a href="http://www.php.net/strtoupper"><span style="color:#000066;">strtoupper</span></a><span style="color:#006600; font-weight:bold;">&#40;</span><span style="color:#0000FF;">$nombre</span><span style="color:#006600; font-weight:bold;">&#41;</span>;</div>
</li>
<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;color:#3A6A8B;">
<div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"><a href="http://www.php.net/echo"><span style="color:#000066;">echo</span></a> <span style="color:#0000FF;">$cadena</span>;</div>
</li>
<li style="font-weight: bold;color:#26536A;">
<div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;">&nbsp;</div>
</li>
<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;color:#3A6A8B;">
<div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"><span style="color:#000000; font-weight:bold;">?&gt;</span> </div>
</li>
</ol>
</div>
</div>
</div>
<p></p>
<p><strong>strtoupper()</strong><br />
Convierte una cadena de texto a minúsculas.</p>
<p><strong>Ejemplo:</strong></p>
<div class="igBar"><span id="lphp-14"><a href="#" onclick="javascript:showPlainTxt('php-14'); return false;">Clic para ver Texto Plano</a></span></div>
<div class="syntax_hilite"><span class="langName">PHP:</span>
<div id="php-14">
<div class="php">
<ol>
<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;color:#3A6A8B;">
<div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"><span style="color:#000000; font-weight:bold;">&lt;?php</span></div>
</li>
<li style="font-weight: bold;color:#26536A;">
<div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;">&nbsp;</div>
</li>
<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;color:#3A6A8B;">
<div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"><span style="color:#0000FF;">$nombre</span> = <span style="color:#FF0000;">"BIENVENIDOS A MI BLOG!"</span>;</div>
</li>
<li style="font-weight: bold;color:#26536A;">
<div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"><span style="color:#0000FF;">$cadena</span> = <a href="http://www.php.net/strtolower"><span style="color:#000066;">strtolower</span></a><span style="color:#006600; font-weight:bold;">&#40;</span><span style="color:#0000FF;">$nombre</span><span style="color:#006600; font-weight:bold;">&#41;</span>;</div>
</li>
<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;color:#3A6A8B;">
<div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"><a href="http://www.php.net/echo"><span style="color:#000066;">echo</span></a> <span style="color:#0000FF;">$cadena</span>;</div>
</li>
<li style="font-weight: bold;color:#26536A;">
<div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;">&nbsp;</div>
</li>
<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;color:#3A6A8B;">
<div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"><span style="color:#000000; font-weight:bold;">?&gt;</span> </div>
</li>
</ol>
</div>
</div>
</div>
<p></p>
<p>Por ahora, esas son las funciones de PHP que mencionaré, ya que son las más utilizadas y con ellas puedes realizar maravillas si eres creativo. Como dije anteriormente, visita la <a href="http://es.php.net/manual/es/index.php">documentación oficial de PHP</a> para ver más funciones de cadenas y otras.</p>
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