PHP Undefined Index
2005
"Notice: Undefined variable", "Notice: Undefined index", and "Notice: Undefined offset" using PHP
120124
Undefined values in Array(len) initializer
108661
In php, is 0 treated as empty?
33796
How to re-index the values of an array in PHP?
59129
Call to undefined method mysqli_stmt::get_result
91338
! Undefined control sequence
37436
In PHP, 0 (int, zero) is equal to "first" or "last" (strings)?
7250
Reference - What does this error mean in PHP?
76704
Undefined variable: $_SESSION
5123
PHP variable variables
137080
PHP: Illegal string-offset
45322
jQuery Ajax results in undefined
55096
Javascript and PHP functions
132987
Fixing the PHP empty function
110246
Variable from JavaScript to PHP
68829
Is it necessary to declare PHP array before adding values with []?
146013
How do I get the key values from $_POST?