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Understanding why your PHP contact form sends blank responses and how to fix it effectively.
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This video is based on the question https://stackoverflow.com/q/65728453/ asked by the user 'jogn' ( https://stackoverflow.com/u/14982755/ ) and on the answer https://stackoverflow.com/a/65728536/ provided by the user 'Waytaria' ( https://stackoverflow.com/u/11465802/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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Why Does My PHP Contact Form Send Blank Responses?

When creating a contact form in PHP, a common issue developers encounter is receiving blank responses even after the user has filled out the form. This can be frustrating, especially when you're eager to receive user feedback or inquiries. Let's dive into the potential reasons behind this problem and how to resolve it effectively.

The Issue

You have a contact form set up with fields for the user's name, email, and message. However, upon submission, you notice that the email you receive contains no information—it's completely blank. You might find yourself asking:

Why are the responses blank? Is there a problem with my code?

The Root Cause

The primary reason for this problem lies within how PHP handles the data submitted via the form. Specifically, the PHP superglobal $_POST is case sensitive. What this means is the keys you use to access the submitted data must exactly match the name attributes of your HTML input fields.

Common Mistake in the Code

Take a look at your HTML form:

[[See Video to Reveal this Text or Code Snippet]]

In your PHP code, you're using:

[[See Video to Reveal this Text or Code Snippet]]

The Problem

The inputs in your HTML form are named name, email, and message, while in your PHP code, you are trying to access them as Name, Email, and Message. Because the case doesn’t match, PHP isn’t able to find the submitted values, resulting in blank responses.

How to Fix It

Step-by-Step Solution

Match the Input Names: Ensure that the keys used in the $_POST array match the name attributes in your HTML exactly.

Change your PHP code to:

[[See Video to Reveal this Text or Code Snippet]]

Re-Test Your Form: After making the changes, test the form again by filling out the fields and submitting it. You should now receive the correct responses in your email.

Validation (Optional): It’s always a good practice to add validation to ensure the data is complete before processing it. In the current code, the $validationOK variable is set to true but has no validation checks in place. You may want to implement checks that ensure all fields are filled out appropriately.

Example of Simple Validation

[[See Video to Reveal this Text or Code Snippet]]

Conclusion

By paying attention to the case sensitivity of the $_POST data and ensuring your input names match, you can avoid the frustrating issue of blank responses from your PHP contact form. Implementing these changes should lead to a seamlessly functioning contact form that successfully collects user information.

If you encounter any additional issues or have questions on further enhancements, feel free to reach out!