For day 16 of 21 in the “PHP Function of the day” series, I’m going to look at printf(). This one is pretty interesting. It allows you to define a format and a series of arguments. The “%[something]” in the format string is used to define both where the argument’s value is output and the expected format. In the format string below, “%s” is a string, “%u” is an unsigned decimal number, and “%%” is simply a percentage symbol.
Let’s take a look.
$name = “Joe”;
$food = “Chicken”;
$percentHungry = 72;
printf(“My name is %s and I am %u%% hungry for %s.”,$name,$percentHungry,$food);
There are a variety of possible format values. It is worth looking up all of the options.