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No-cache headers do not solve this problem.
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No-cache headers do not solve this problem.

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Then the php settings does have caching, it should be a caching problem. 
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Then the php settings does have caching, it should be a caching problem.

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After Submitting values from one page, If i click back button from submitted page, its showing page expired in PHP.<br />
<br />
How can I resolved back button issue. I am using post method and I cant use get method.<br />
<br />
Thanks in Advance.<br />
Sreejith
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After Submitting values from one page, If i click back button from submitted page, its showing page expired in PHP.

How can I resolved back button issue. I am using post method and I cant use get method.

Thanks in Advance.
Sreejith

Back Button Issue. Showing page expired

PHP is a widely-used server-side scripting language especially suited for web development, powering tens of millions of sites from Facebook to personal WordPress blogs. PHP is often paired with the MySQL relational database, but includes support for most other mainstream databases. By utilizing different Server APIs, PHP can work on many different web servers as a server-side scripting language.