and operator

[maxim]

if have what will be a easy q for most of you.

 

consider the following code

 

if (0 and 1 > -1) {
print "true";
}

 

that if statment will never be read. im not sure why, my guess is because PHP thinks the 0 is false ??

 

this code how ever will work as expected

if (1 and 0 > -1) {
print "true";
}

 

any one care to explain why. is it precedence ? 

 

[Glyde]

Because 0, when not being compared to anything else, is false.  0 can be compared to other integers using <, <=, >=, >, ==, ===, !=, !==, but in a standalone state all of the following are false:

"" (an empty string)

"0" (a string containing only 0)

0 (0 as an integer)

[pocobueno1388]

I don't think you can use the and operator in an IF statement like that....not positive though. You would have to do something like this:

 

if ((1 > -1) && (0 > -1)){
   print 'true';
}