PHP global variable undefined in included function
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Using global variables in a function
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PHP class: Global variable as property in class
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PHP: List all includes
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PHP calling AJAX function that relies on passed PHP function values not working
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php $_GET and undefined index
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Reference - What does this error mean in PHP?
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undefined offset PHP error
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Pass PHP variables to Javascript/jquery
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Nested php includes using './'
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Unable to use user fields from the global variable $user
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How do I embed PHP code in JavaScript?
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How to avoid global variables in JavaScript?
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Variable scoping in Module
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How to define global functions in PHP
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Are global variables bad?
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Why isn't the $Site global variable returning anything?
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Assigning to variable from parent function: "Local variable referenced before assignment"