Undefined index/variable
2005
"Notice: Undefined variable", "Notice: Undefined index", and "Notice: Undefined offset" using PHP
619
Why are these constructs using pre and post-increment undefined behavior?
83403
$_FILES undefined PHP upload form. Can't figure out
6292
What is an undefined reference/unresolved external symbol error and how do I fix it?
147983
Why is the loop assigning a reference of the last index element to?
44112
"Variable" variables in Javascript?
157501
How do I set variables for variable_get()?
89331
Variable does not exist in the current context?
45322
jQuery Ajax results in undefined
10857
getElementsByClassName produces error "undefined"
67525
malloc undefined
25704
Undefined, unspecified and implementation-defined behavior
33125
Unbound Local Error with global variable
37735
How can I check for "undefined" in JavaScript?
58038
Unknown modifier '/' error in PHP
83890
Uninitialized values being initialized?
83335
PHP $_GET and $_POST undefined problem