CODEWITHSUNDEEP
phpcoldfusion
user3618860
user3618860

Reputation: 41

What could be the equivalent of a PHP array in ColdFusion?

Working on some tutorials, I have seen PHP arrays are quite different from ColdFusion arrays, and that PHP does not have structures. I need to know what part of the following PHP code is possible in ColdFusion:

public $colors = array(
    array(27,78,181), // blue
    array(22,163,35), // green
    array(214,36,7),  // red
);

public $fonts = array(
    'Antykwa'  => array('spacing' => -3, 'minSize' => 27, 'maxSize' => 30, 'font' => 'AntykwaBold.ttf'),
    'Candice'  => array('spacing' =>-1.5,'minSize' => 28, 'maxSize' => 31, 'font' => 'Candice.ttf'),
    'DingDong' => array('spacing' => -2, 'minSize' => 24, 'maxSize' => 30, 'font' => 'Ding-DongDaddyO.ttf'),
    'Duality'  => array('spacing' => -2, 'minSize' => 30, 'maxSize' => 38, 'font' => 'Duality.ttf'),
    'Heineken' => array('spacing' => -2, 'minSize' => 24, 'maxSize' => 34, 'font' => 'Heineken.ttf'),
    'Jura'     => array('spacing' => -2, 'minSize' => 28, 'maxSize' => 32, 'font' => 'Jura.ttf'),
    'StayPuft' => array('spacing' =>-1.5,'minSize' => 28, 'maxSize' => 32, 'font' => 'StayPuft.ttf'),
    'Times'    => array('spacing' => -2, 'minSize' => 28, 'maxSize' => 34, 'font' => 'TimesNewRomanBold.ttf'),
    'VeraSans' => array('spacing' => -1, 'minSize' => 20, 'maxSize' => 28, 'font' => 'VeraSansBold.ttf'),
);

Another part of PHP is the foreach loop like:

foreach($list as key=>$value) {

}

I think this could be done as a loop over a structure, but I am not sure.

Upvotes: 2

Views: 265

Answers (1)

Adam Cameron
Adam Cameron

Reputation: 29870

The first example is just analogous to a CFML array, eg:

colors = [
    [27,78,181], // blue
    [22,163,35], // green
    [214,36,7]  // red
];

Whilst it's true that PHP doesn't have something called a "struct", it has an associative array, which is the same thing, for all intents and purposes. And your latter example is one of those. The CFML equiv (abbreviated) would be:

fonts = {
    'Antykwa' = {'spacing' = -3, 'minSize' = 27, 'maxSize' = 30, 'font' = 'AntykwaBold.ttf'}
}

Note: you don't need to quote the key names in CFML, but ColdFusion will convert them all to upper case if you do not (I don't think Railo does, and there's a setting in CF11 to stop this from happening too). Note that in CF the ordering of the keys in a struct is not preserved; it can be in Railo, if using a linked struct (I'll leave it to you to look up about that)

You've a couple of options for looping over arrays and structs in CFML:

for (element in array){

}

for (key in struct){
    value = struct[key];
}

One can also use iteration functions:

array.each(function(index, value, array){
});

struct.each(function(key, value, struct){

});

There are also other iteration methods such as filter(), map() and the like. There are new to Railo 4.2 and COldFusion 11. Previous versions of each had headless functions for each(), eg: arrayEach(array, callback) and structEach(struct, callback)

It's all in the docs.

Upvotes: 5

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