为什么这些字符串不匹配！？！ - PHP

Question

I have an if statement with several conditions:

if (
    (fncIsSet($row[0]['incident']) == $line[4]
     && fncIsSet($row[0]['id']) == $line[0]
     && fncIsSet($row[0]["code"]) == $line[2]
    )
    && (
        ($GLOBALS['postCheckList'] == 2
         && $row[0]['QAResult']=='Fail'
        )
        || ($GLOBALS['postCheckList'] != 2)
    )
){

I have a large list of items going through this piece of logic (5000+ values) and about 99.9% pass through as expected.

I've stepped through the debugger a dozen times so I can confirm that the first 2 conditions are passing but the third is failing:

fncIsSet($row[0]["code"]) == $line[2]

Here are the vars that it's trying to compare (copied straight from the source) with their Hex codes beneath them:

Ambulance-2
Ambulance-2
41 6D 62 75 6C 61 6E 63 65 2D 32 
41 6D 62 75 6C 61 6E 63 65 2D 32 

WTF, right? I can't see any reason why these aren't working especially when other very similar variables are passing through fine (ie Ambulance-1 and Ambulance-3).

Here is another example:

Anzemet
Anzemet
41 6E 7A 65 6D 65 74 
41 6E 7A 65 6D 65 74 

Answer 1

I'll bet dollars to donuts you've got trailing whitespace issues. Try printing out your variables with delimiters on either end (pipes are always good), or using var_dump() to deeply inspect your variables.