i m very new to capcha.i downloaded simple capcha file but capcha image is not shown in the form .i cannot find what changes should i do so that capcha image show in the form
form.php - <?php
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session_start();
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?>
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<HTML>
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<HEAD>
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<TITLE>PHP-CAPTCHA </TITLE>
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<META HTTP-EQUIV=\"Content-Type\" CONTENT=\"text/html; charset=iso-8859-1\">
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</HEAD>
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<BODY onLoad="return focuson();">
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<script language="javascript">
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function focuson()
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{ document.form1.number.focus()}
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function check()
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{
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if(document.form1.number.value==0)
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{
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alert("Please enter your Category Name");
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document.form1.number.focus();
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return false;
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}
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}
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</script>
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<?php
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if(isset($_REQUEST['Submit'])){
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$key=substr($_SESSION['key'],0,5);
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$number = $_REQUEST['number'];
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if($number!=$key){
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echo '<center><font face="Verdana, Arial, Helvetica, sans-serif" color="#FF0000">
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Validation string not valid! Please try again!</font></center>';}
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else{
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echo '<center><font face="Verdana, Arial, Helvetica, sans-serif" color="#66CC00">
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Your string is valid!</font></center>';}
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}
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?>
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<form name="form1" method="post" action="form.php" onSubmit="return check();">
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<table width="342" align="center" cellspacing="0" bgcolor="#D4D0C8">
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<tr>
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<td colspan="4" align="center"><hr></td>
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</tr>
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<tr>
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<td width="8" align="center"> </td>
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<td width="330" align="right" valign="top"> </td>
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<td width="330" align="right" valign="top"> </td>
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<td width="2" align="center"> </td>
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</tr>
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<tr>
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<td align="center"> </td>
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<td align="right" valign="top"> </td>
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<td align="right" valign="top"> </td>
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<td align="center"> </td>
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</tr>
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<tr>
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<td align="center"> </td>
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<td align="center"> </td>
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<td align="center"><img src="php_captcha.php"></td>
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<td align="center"> </td>
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</tr>
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<tr>
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<td align="center"> </td>
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<td align="center"> </td>
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<td align="center"> </td>
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<td align="center"> </td>
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</tr>
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<tr>
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<td align="center"> </td>
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<td align="center"> Please enter the string shown in the image in the form.<br></td>
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<td align="center"><input name="number" type="text" id="number"></td>
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<td align="center"> </td>
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</tr>
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<tr>
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<td align="center"> </td>
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<td align="center"> </td>
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<td align="center"> </td>
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<td align="center"> </td>
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</tr>
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<tr>
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<td align="center"> </td>
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<td align="center"> </td>
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<td align="center"><input name="Submit" type="submit" value="Submit"></td>
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<td align="center"> </td>
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</tr>
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<tr>
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<td colspan="4" align="center"><hr></td>
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</tr>
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</table>
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</form>
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</BODY>
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</HTML>
php_capcha.php - <?php
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session_start();
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$RandomStr = md5(microtime());// md5 to generate the random string
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$ResultStr = substr($RandomStr,0,5);//trim 5 digit
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$NewImage =imagecreatefromjpeg("img.jpg");//image create by existing image and as back ground
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$LineColor = imagecolorallocate($NewImage,233,239,239);//line color
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$TextColor = imagecolorallocate($NewImage, 255, 255, 255);//text color-white
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imageline($NewImage,1,1,40,40,$LineColor);//create line 1 on image
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imageline($NewImage,1,100,60,0,$LineColor);//create line 2 on image
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imagestring($NewImage, 5, 20, 10, $ResultStr, $TextColor);// Draw a random string horizontally
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$_SESSION['key'] = $ResultStr;// carry the data through session
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header("Content-type: image/jpeg");// out out the image
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imagejpeg($NewImage);//Output image to browser
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?>
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2  1623 
is php error messaging turned on? do you get any errors?
is GD installed?
Dan
There is no error only captcha image not show on browser
what is gd?
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