php - if condition failing every time

Question

I have a simple php function. however, it fails every time, no matter what.

function for determining tomato pic

echo "$info[2]";
function tomato()
{
    if(intval($info[2]) > 60)
        return "fresh";
    else if(intval($info[2]) < 60)
        return "rotten";
}

it echo 95 on the page but then returns "rotten". any idea whats up with this?

where do you define $info? Pass it to your function, or (dirty) use global: `function tomato(){ global $info; [...]` — Green Black, Mar 01 '13 at 23:53
please consider to accept an answer (click tick mark on the left) if it actually answered your question — michi, Apr 14 '13 at 12:57

score 3 · Accepted Answer · answered Mar 01 '13 at 23:51

Functions do not inherit variables from the parent scope. There are a few ways around this:

1: Pass them as a parameter

function tomato($info) {...}
tomato($info);

2: If it is an anonymous function, use the use clause

$tomato = function() use ($info) {...}

3: (Not recommended) Use the global keyword to "import" the variable

function tomato() {
    global $info;
    ...
}

4: (Very bad idea, but added for completeness) Use the $GLOBALS array

function tomato() {
    // do stuff with $GLOBALS['info'][2];
}

michi · Answer 2 · 2013-03-01T23:53:21.470

1

you have to make the variable known to the function, try

function tomato() {
    global $info;
    ...

alternatively, pass the value as argument to the function:

function tomato($tomatocondition) {
    if(intval($tomatocondition) > 60)
        return "fresh";
    else if(intval($tomatocondition) < 60)
        return "rotten";

and call it...

echo tomato($info[2]);

edited Mar 01 '13 at 23:53

answered Mar 01 '13 at 23:47

michi

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never use `global` pass the value as an argument instead. – kittycat Mar 01 '13 at 23:47
declaring global crashes the page... passing as function works though, thank you! – Ted Mar 01 '13 at 23:49
@cryptic, Why? `Global` exists, but using of it cant be? – el Dude Mar 01 '13 at 23:50
@cryptic, that's controversial =) – el Dude Mar 02 '13 at 00:09

php - if condition failing every time

2 Answers2