How can PHP 5.3 think 0 is null?
90598
PHP considers null is equal to zero
44134
Creating default object from empty value in PHP?
128709
Why is there a `null` value in JavaScript?
89873
PHP: a short cut for isset and !empty?
151813
What does "javascript:void(0)" mean?
115884
How to make a field NULL using MySQL GUI Tools?
871
Why does PHP not complain when I treat a null value as an array like this?
67597
Can constructor return a null object?
118788
Setting Zero values back to NULL
132682
What does a leading zero do for a php int?
94883
Why does comparing a SQL date variable to null behave in this way?
132164
Reintroduce $HTTP_POST_VARS in PHP 5.3
158810
Why does >= return false when == returns true for null values?
110913
Difference in accessing arrays in PHP 5.3 and 5.4 or some configuration mismatch?
5377
Is there a standard function to check for null, undefined, or blank variables in JavaScript?
54143
Why is the default value of the string type null instead of an empty string?
34563
Why does PHP consider 0 to be equal to a string?