PHP 5.4到5.3转换

Question

Are their any good resources when you are trying to get a PHP script written in a newer version to work on an older version; Specifically 5.4 to 5.3?

I have even checked out articles about the changes and I cannot seem to figure out what I am doing wrong.

Here is the error I am getting, at this moment:

Parse error: syntax error, unexpected '[' in Schedule.php on line 113

And the code it is referring to:

private static $GAMES_QUERY = array('season' => null, 'gameType' => null);
.....
public function getSeason(){
$test = array_keys(self::$GAMES_QUERY)[0]; //<<<<<<<<<< line:113
return($this->query[$test]);
}

Everything I have seen seems to say that 5.3 had self::, array_keys, and the ability to access arrays like that.

Answer 1

try...

$test = array_keys(self::$GAMES_QUERY);
$test = $test[0];

If I'm not mistaken, you can't use the key reference [0] in the same declaration in 5.3 like you can in 5.4 and javascript, etc.