PHP I create a double variable then test it for equality and it does not match?
43
Is floating point math broken?
56072
How do I compare two string variables in an 'if' statement in Bash?
120580
What does "=>" mean in PHP?
32293
What's the difference between if(!$variable) and if(isset($variable))?
63372
see if a variable equals any other variables in a list php
4772
Difference between "not equal" operators  and != in PHP
134318
Is it safe to check floating point values for equality to 0?
90598
PHP considers null is equal to zero
101173
Testing string equality using hashCode()
97174
Compare floats in php
118255
how do I validate user input as a double in C++?
3528
How to check if a variable is the same as at least one of two other variables?
141442
Why does my string comparison fail?
128642
The accuracy of PHP float calculate
108661
In php, is 0 treated as empty?
145046
comparing float/double values using == operator
149701
How to check that a string is parseable to a double?