In ecshop, what does $ val {0} mean?

In ecshop, what does $ val {0} mean ??? Shouldn't rt be [0? Why is it {0 }? ------ Best solution ------------------------------------------------------------ what does $ val {0} in string & nb ecshop mean ???
Rt

Shouldn't it be [0? Why is it {0 }?
------ Best solution --------------------
The first character of the string $ val

Although you can write $ val [0], to prevent ambiguity, php still recommends writing $ val {0}
After all, strings and arrays are not the same thing.
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Reference:

The first character of the string $ val

Although you can write $ val [0], to prevent ambiguity, php still recommends writing $ val {0}
After all, strings and arrays are not the same thing.

Oh .. So, thank you.