The simplest Q ever. $var != 0 in PHP
1736
How do the PHP equality (== double equals) and identity (=== triple equals) comparison operators differ?
48791
How do I examine defined constants in PHP?
81578
How do you create optional arguments in php?
158001
Dynamic Comparison Operators in PHP
114179
If $Var(X)=0$ then is $X$ a constant?
33464
What is the difference between PHP echo and PHP return in plain English?
44134
Creating default object from empty value in PHP?
103160
Is there a PHP function for swapping the values of two variables?
139679
How can I check if an array contains a specific value in php?
70947
DEFINE vs Variable in PHP
20459
How do I pass JavaScript variables to PHP?
110514
How do I immediately execute an anonymous function in PHP?
3175
Can you 'exit' a loop in PHP?
73107
Adding leading 0 in php
25703
Best way to test for a variable's existence in PHP; isset() is clearly broken
60800
PHP: Access Array Value on the Fly
120580
What does "=>" mean in PHP?