How to have a zigzag font?

[kvijayhari]

hi

i'm using the image functions of the PHP to create a image from the given string and then display..


I want to know how to get the text to be displayed in zigzag format such as used in common sites as yahoo, google etc..

Is there any special function for that or any special attributes with the imagestring function???

[iulian]

You can use imageloadfont() . Maybe this can help you.

[stereofrog]

Looking in my crystal ball, I'm guessing you're looking for
captcha+php
Hope this helps

[kvijayhari]

Hi iulian & stereofrog,


you both got it right.

I got the api from one of the site which gives a code to us to form a captcha ..


Thanks for ur answers..

But i need to have a format where the letters are arranged in a zigzag format and not in a straight line.. all the sites which provides for this is having a straight line format, even the imageloadfont() function loads the image from font , it displays it striaght.

Is there any other function specifically handle this?

[Raju Gautam]

Yes i have done same thing like you need so i want to share it here.
Save the following code as randomize.php

    session_start();
    function random_string($len=5, $str=''){
      for($i = 1; $i <= $len; $i++){
        $ord = rand(48, 90);
        if((($ord >= 48) && ($ord <= 57)) || (($ord >= 65) && ($ord <= 90)))
            $str .= chr($ord);
        else
            $str .= random_string(1);
      }
      return $str;
    }
    $rand_str = random_string(5);
    $_SESSION['image_value'] = md5($rand_str);
    
    $letter1 = substr($rand_str,0,1);
    $letter2 = substr($rand_str,1,1);
    $letter3 = substr($rand_str,2,1);
    $letter4 = substr($rand_str,3,1);
    $letter5 = substr($rand_str,4,1);
    
    $image = imagecreatefrompng("./images/noise.png");
    $angle1 = rand(-20, 20);
    $angle2 = rand(-20, 20);
    $angle3 = rand(-20, 20);
    $angle4 = rand(-20, 20);
    $angle5 = rand(-20, 20);
    
    $font1 = "fonts/" . rand(1, 6).".ttf";
    $font2 = "fonts/" . rand(1, 6).".ttf";
    $font3 = "fonts/" . rand(1, 6).".ttf";
    $font4 = "fonts/" . rand(1, 6).".ttf";
    $font5 = "fonts/" . rand(1, 6).".ttf";
    
    $colors[0] = array(122,229,112);
    $colors[1] = array(85,178,85);
    $colors[2] = array(226,108,97);
    $colors[3] = array(141,214,210);
    $colors[4] = array(214,141,205);
    $colors[5] = array(100,138,204);
    
    $color1 = rand(0, 5);
    $color2 = rand(0, 5);
    $color3 = rand(0, 5);
    $color4 = rand(0, 5);
    $color5 = rand(0, 5);

    $textColor1 = imagecolorallocate ($image, $colors[$color1][0],$colors[$color1][1], $colors[$color1][2]);
    $textColor2 = imagecolorallocate ($image, $colors[$color2][0],$colors[$color2][1], $colors[$color2][2]);
    $textColor3 = imagecolorallocate ($image, $colors[$color3][0],$colors[$color3][1], $colors[$color3][2]);
    $textColor4 = imagecolorallocate ($image, $colors[$color4][0],$colors[$color4][1], $colors[$color4][2]);
    $textColor4 = imagecolorallocate ($image, $colors[$color5][0],$colors[$color5][1], $colors[$color5][2]);
    
    $size = 20;
    imagettftext($image, $size, $angle1, 10, $size+15, $textColor1, $font1, $letter1);
    imagettftext($image, $size, $angle2, 35, $size+15, $textColor2, $font2, $letter2);
    imagettftext($image, $size, $angle3, 60, $size+15, $textColor3, $font3, $letter3);
    imagettftext($image, $size, $angle4, 85, $size+15, $textColor4, $font4, $letter4);
    imagettftext($image, $size, $angle5, 110, $size+15, $textColor5, $font5, $letter5);
    
    header('Content-type: image/jpeg');
    imagejpeg($image);
    imagedestroy($image); 

Then call the randomize.php file like this somewhere in your HTML form area or anywhere.

<img src="randomize.php">

You should have two folders:
fonts = for storing at least 6 fonts names 1.ttf,2.ttf,3.ttf,4.ttf,5.ttf,6.ttf (you can use any of the fonts of your chose but the names must be like above 1,2...,6 with the extension.)
images = for storing a background image.

Good luck!!
Cheers!