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![}
?>
</head>
<body>
<?php
$btn=isset($_POST["submit1"]);
if ($btn==NULL){ ?>
<h1>El mayor de tres numeros cualesquiera</h1>
<form method="post" name="frm1">
<fieldset>
<legend> DATOS </legend>
<div>
<label>numero 1</label>
<input type="text" name="numa" value="">
</div>
<div>
<label>numero 2</label>
<input type="text" name="numb" value="">
</div>
<div>
<label>numero 3</label>
<input type="text" name="numc" value="">
</div>
<div>
<input type="submit" value="Calcular" name="submit1">
</div>
<div>
<input type="button" value="Repetir" disabled name="reset1">
<input type="reset" value="Blanquear" name="reset3">
</div>
<?php
} else {
$myr=mayor($_POST['numa'],$_POST['numb'],$_POST['numc']);
?>
<h1>El mayor de tres numeros cualesquiera</h1>
<form method="post">
<fieldset>
<legend> DATOS </legend>
<div>
<label>numero 1:</label>
<label><?php echo $_REQUEST["numa"] ?></label>
</div>
<div>
<label>numero 2:</label>
<label><?php echo $_REQUEST["numb"] ?></label>
</div>
<div>
<label>numero 3:</label>
<label><?php echo $_REQUEST["numc"] ?></label>](https://image.slidesharecdn.com/php-160505004122/75/Php-2-2048.jpg)
![}
$hexa=$residuo.$hexa;
}
return $hexa;
}
?>
</head>
<body>
<h1>CONVERSOR DECIMAL-HEXADECIMAL</h1>
<form method='post' action='<?php echo $_SERVER['PHP_SELF']?>'>
<fieldset><legend>DATOS</legend>
NUMERO DECIMAL <input type='text' name='numero' autofocus><br>
<br>NUMERO HEXADECIMAL <input type='text' name='hex' readonly
value='<?php echo conversion($_POST['numero']); ?>'>
<input type='submit' name='boton' value='enviar'>
</fieldset>
</form>
<?php
ERROR_REPORTING(0);
?>
</body>
</html>
</div>
</fieldset>
</form>
</body>
</html>
el $_server['php_self']](https://image.slidesharecdn.com/php-160505004122/75/Php-4-2048.jpg)
Php
- 1. <html> <head> <title>ejercicio 01</title> <link rel="shortcuticon" href="favicon.ico"> </head> <body> <h1>El mayor de tres numeros cualesquiera</h1> <form method="post" name="frm1"> <fieldset> <legend> DATOS </legend> <div> <label>numero 1</label> <input type="text" name="numa" value=""> </div> <div> <label>numero 2</label> <input type="text" name="numb" value=""> </div> <div> <label>numero 3</label> <input type="text" name="numc" value=""> </div> <div> <input type="submit" value="Calcular" name="submit1"> </div> <div> <input type="button" value="Repetir" disabled name="reset1"> <input type="reset" value="Blanquear" name="reset3"> </div> </label> Mayor de tres numeros <html> <head> <title>ejercicio 01</title> <link rel="shortcut icon" href="favicon.ico"> <?php function mayor($numa,$numb,$numc){ $num=0; if ($numa>$numb) { if ($numa>$numc) $num=$numa;} else { if ($numb>$numc) $num=$numb; else $num=$numc;} return $num;
- 2. } ?> </head> <body> <?php $btn=isset($_POST["submit1"]); if ($btn==NULL){ ?> <h1>Elmayor de tres numeros cualesquiera</h1> <form method="post" name="frm1"> <fieldset> <legend> DATOS </legend> <div> <label>numero 1</label> <input type="text" name="numa" value=""> </div> <div> <label>numero 2</label> <input type="text" name="numb" value=""> </div> <div> <label>numero 3</label> <input type="text" name="numc" value=""> </div> <div> <input type="submit" value="Calcular" name="submit1"> </div> <div> <input type="button" value="Repetir" disabled name="reset1"> <input type="reset" value="Blanquear" name="reset3"> </div> <?php } else { $myr=mayor($_POST['numa'],$_POST['numb'],$_POST['numc']); ?> <h1>El mayor de tres numeros cualesquiera</h1> <form method="post"> <fieldset> <legend> DATOS </legend> <div> <label>numero 1:</label> <label><?php echo $_REQUEST["numa"] ?></label> </div> <div> <label>numero 2:</label> <label><?php echo $_REQUEST["numb"] ?></label> </div> <div> <label>numero 3:</label> <label><?php echo $_REQUEST["numc"] ?></label>
- 3. </div> <div> <input type="submit" value="Calcular"name="submit1" disabled> </div> <input type="button" value="Repetir" name="reset2" enabled onclick="window.history.go(-1); return false;"> <div> <label> El mayor de los tres es <?php echo $myr; } ?> </label> </div> </fieldset> </form> </body> </html> conversion a decimal a hexadecimal <html> <head> <title>Conversion Hexadecimal</title> <?php function conversion($decimal) { $hexa=''; while ($decimal>0) { $residuo=intval($decimal%16); $decimal=intval($decimal/16); switch ($residuo) { case 10: $residuo= 'A'; break; case 11: $residuo= 'B'; break; case 12: $residuo= 'C'; break; case 13: $residuo= 'D'; break; case 14: $residuo= 'E'; break; case 15: $residuo= 'F'; break;
- 4. } $hexa=$residuo.$hexa; } return $hexa; } ?> </head> <body> <h1>CONVERSOR DECIMAL-HEXADECIMAL</h1> <formmethod='post' action='<?php echo $_SERVER['PHP_SELF']?>'> <fieldset><legend>DATOS</legend> NUMERO DECIMAL <input type='text' name='numero' autofocus><br> <br>NUMERO HEXADECIMAL <input type='text' name='hex' readonly value='<?php echo conversion($_POST['numero']); ?>'> <input type='submit' name='boton' value='enviar'> </fieldset> </form> <?php ERROR_REPORTING(0); ?> </body> </html> </div> </fieldset> </form> </body> </html> el $_server['php_self']