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What does Undefined mean? PHP Undefined index Issue

Source: Internet
Author: User
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Can be preceded by the error statement plus @
You can also modify php.ini
Php. INI error_reporting = E_all caused, if you do not want to see this hint, you can
error_reporting = E_all &~e_notice.
You can also add error_reporting (0) to the top of the page; Any error displayed on this page will be blocked

The above describes the Undefined what is the meaning of PHP Undefined index, including the content of what is the meaning of Undefined, want to be interested in PHP tutorial friends helpful.

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