How to Code Your Own CAPTCHA Script In PHP

Today I will show you how to code your own CAPTCHA Script.

<?php
session_start();
$strlength = rand(4,7);

for($i=1;$i<=$strlength;$i++)
{
$textornumber = rand(1,3);
if($textornumber == 1)
{
$captchastr .= chr(rand(49,57));
}
if($textornumber == 2)
{
$captchastr .= chr(rand(65,78));
}
if($textornumber == 3)
{
$captchastr .= chr(rand(80,90));
}
}
$randcolR = rand(100,230);
$randcolG = rand(100,230);
$randcolB = rand(100,230);

/initialize image $captcha is handle dimensions 200,50
$captcha = imageCreate(200,50);
$backcolor = imageColorAllocate($captcha, $randcolR, $randcolG, $randcolB);

$txtcolor = imageColorAllocate($captcha, ($randcolR - 20), ($randcolG - 20), ($randcolB - 20));
for($i=1;$i<=$strlength;$i++)
{

$clockorcounter = rand(1,2);
if ($clockorcounter == 1)
{
$rotangle = rand(0,45);
}
if ($clockorcounter == 2)
{
$rotangle = rand(315,360);
}

//$i*25 spaces the characters 25 pixels apart
imagettftext($captcha,rand(14,20),$rotangle,($i*25),30,$txtcolor,"/arial.ttf",substr($captchastr,($i-1),1));
}
for($i=1; $i<=4;$i++)
{
imageellipse($captcha,rand(1,200),rand(1,50),rand(50,100),rand(12,25),$txtcolor);
}
for($i=1; $i<=4;$i++)
{
imageellipse($captcha,rand(1,200),rand(1,50),rand(50,100),rand(12,25),$backcolor);
}
//Send the headers (at last possible time)
header(Content-type: image/png);

//Output the image as a PNG
imagePNG($captcha);

//Delete the image from memory
imageDestroy($captcha);

$_SESSION[captchastr] = $captchastr;

?>

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Enjoy!

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How To Code A Simple Calculator In PHP

In this php tutorial you will learn how to make a simple PHP calculator

<?php

if($submit)
{
 if($operator == *)
 {
 echo $numa * $numb;
 } elseif($operator == /)
 {
 echo $numa / $numb;
 } elseif($operator == +)
 {
 echo $numa + $numb;
 } elseif($operator == -)
 {
 echo $numa - $numb;
 }
} else { ?>
<form method="POST" action="<?php $_SERVER[PHP_SELF]; ?>">
 <input type="text" name="numa" size="10">
 <select name="operator">
 <option value="+">Add</option>
 <option value="-">Subtract</option>
 <option value="*">Multiply</option>
 <option value="/">Divide</option>
 </select>
 <input type="text" name="numb" size="10">
 <input type="submit" value="Calculate" name="submit">
</form>
<?php } ?>

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Code A Simple PHP Contact Form With A Reply To Option

Today I will show to how to code a Contact form in PHP Which also has a Reply To feature.It is very simple to do so using combination of HTML and PHP.

The Code for the form is given below:

Form Code:

<form action="procesar_form.php" method="post" name="formulario" id="formulario" onsubmit=return validarFormulario()>
<label for="nombre">Nombre </label>
<input type="text" name="nombre" id="nombre" size="60"/>

<label for="apellido">Apellido </label>
<input type="text" name="apellido" id="apellido" size="60"/>

<label for="email">Email </label>
<input type="text" name="email" id="email" size="60"/>

<label for="comentarios">Comentarios</label>
<textarea name="comentarios" id="comentarios" cols="44" rows="10"></textarea>

<input type="button" name="enviar" id="enviar" value="Enviar" onclick="validarFormulario()" /></textarea>

</form>

PHP Code

$email = $_POST[email];


$to = xyz@gmail.com;
$subject = Contacto Us;
$message = Name: . $_POST[name] . " " .
Surname: . $_POST[surname] . " " .
Email: . $_POST[email] . " " .
Comments: . $_POST[comments];
$headers = From: $email . " " .
 Reply-to: $email . " " .
 X-Mailer: PHP/ . phpversion();


mail($to, $subject, $message, $headers);


header("Location: ../../index.html");

Just put it all together and you are ready to go.I hope you enjoyed this free php script

Enjoy!

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PHP Source Code Utility Script

Highlight PHP syntax and optionally add line numbers to PHP source code or files, with several output options. Files to highlight are chosen in a form and temporarily uploaded to the remote server, or you can use this script on your local server to aid PHP development.

Download PHP Source Code Utility Script

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