[SOLVED] negative numbers evaluate as greater than positive numbers ????

[smitthhyy]

This has got me stumped. Hoping someone has a clue on how to get around it:

 

$a = 77;

$b = 78;

$c = 23;

 

if ( ( (($a - $b) >> 4) || (($b - $a) >> 4) ) && ($c != 1) )

 

Statemenet evaluates TRUE   

 

if ( ( ((77 - 78) >> 4) || ((78 - 77) >> 4) ) && (23 != 1) )

if ( ( (-1 >> 4) || (1 >> 4) ) && (23 != 1) )

if ( ( (TRUE) || (FALSE ) ) && (TRUE) )

 

When I went to school, -1 was smaller than +4.

 

Using PHP5

 

Thanks.

[PFMaBiSmAd]

Two >> is not a comparison operator, it is a bit shift operator.

[smitthhyy]

Doh!

Solved

 

Statemenet evaluates FALSE

 

if ( ( ((77 - 78) > 4) || ((78 - 77) > 4) ) && (23 != 1) )

if ( ( (-1 > 4) || (1 > 4) ) && (23 != 1) )

if ( ( (FALSE) || (FALSE ) ) && (TRUE) )