David Krings wrote:
Paul Houle wrote:
(4) Make a habit of writing {$like_this}
Can you elaborate on this? Me guessing of what you mean is probably
not a good approach. Thanks in advance.
There's a short form and long form of substitution in PHP. The
short form is
$x="$y an example of the short form";
and
$x="{$y} is an example of the short form";
You can get in trouble with the short form because it's greedy.
Imagine you're trying to make the name of a logfile
$logfile_name="$year_$month_$day_logfile.txt";
PHP evaluates "$" expressions in a greedy manner, so it will look
up the variables
$year_
$month_
$day_logfile
rather than
$year
$month
$day
that you probably want.
$logfile_name="{$year}_{$month}_{$day}_logfile.txt";
gets the desired effect. The long form also lets you do cool things
with arrays and object, like
"{$my_array[$index]}"
"{$my_array["i_can_really_use_quotes_to_have_a_string_here"]}"
"{$object->special_property}"
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