Submit a form only once
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This script demonstrates how to prevent your users from submitting the same form data multiple times. If the user click the submit button more than one once, it shows a small message that the form data has been already sent.
Most scripts are free or open source. But some have the full source code available for download yet itīs required to have permission to use them and most often the price will be listed. If there is a script license e.g. GNU or GPL then it will also be listed. |
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