indexing arrays with quoted numbers

[Melville]

I am trying to create an array that has the year as the index. So I would access it with $array_name['$year'].

However, I am getting an undefined index error. Specifically, I am getting an error with Undefined index: $year. It appears that it is interpreting the $year in ['$year'] as a literal. It is not evaluating $year and then using ['evaluation-of-$year']. Or if it is evaluating $year, since $year is a number, it is interpreting it as [###], not ['###']. In other words, it is interpreting it as a numeric index rather than an associative one.

Any suggestions?

Thanks,

Mel

[Installer]

No, it is seeing '$year' as an associative index, because of the single quotes. Leave off quote marks altogether if you want the variable name expanded to its value. It will then be either associative or numeric, depending on how you define $year. (You could use double quotes, but they are unnecessary here.)

Understanding the differences among using single quotes, double quotes, and no quotes is pretty basic to using PHP, so you should read this.