Is PHP a case sensitive language?
In PHP, variable names are case-sensitive but function names are not case sensitive.
Explanation:
- If you defined variable in lowercase, then you need to use it in lowercase everywhere in the program. If we define a variable
$name = "James";
then we must need to use $name. $NAME will not work
- If you defined function name in lowercase, but calling them in uppercase it will work. For example, If we define
function sum() {}
then calling SUM() will also work.
Note:
Function names are case-insensitive, though it is good to call functions in the same case as they appear in their declaration for consistency.
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