Automatic generation of captcha and compares with user entered text in php
##Information
image.phpreturns a unique png image of 58×30 in every refresh.- this code generates a four character unique text. You can change the formula as per your wish to make it more secure.
$text =substr(md5(time()+123456789% rand(4000, 55000000)),rand(0,25),4); - On click, Reload button calls the 'image.php' file via AJAX so that new image is produced.
- Font can be changed as per your wish
$font = 'fonts/font.ttf';