Member Avatar for rajeesh_rsn

Hai,

I likes to know the exact process of php captcha verification. As best of my knowledge the process is as follows

1. First create a randon string
2. Create an image and write this string into that image.
3. Then store the string variable in a hidden field in that form.
4. on form submit check the entered string with the value of the hidden field. If false return to the prev page.

Please let me know whether it is the correct and applicable way ? Or is there is any other way ?

Please help me
Thanks in advance
Rajeesh

  • 2 Contributors
  • 1 Reply
  • 54 Views
  • 16 Hours Discussion Span
  • Latest Post Latest Post by pritaeas
Member Avatar for pritaeas

The string value is stored in a session variable, not as a hidden field in the form, as that would defeat it's purpose.

Be a part of the DaniWeb community

We're a friendly, industry-focused community of developers, IT pros, digital marketers, and technology enthusiasts meeting, networking, learning, and sharing knowledge.