NewbieQ: passing value to function

[scanreg]

Am just starting to learn PHP  ??? 

 

I have the following function:

 

function dino($fred) {

return $fred *= 2;

}

$wilma = 6;

$barney = dino($wilma);

echo "\$wilma is: $wilma<br />";

echo "\$barney is: $barney";

 

If you have $wilma = 6; why isn't it $wilma above in the function instead of $fred ?

 

In other words, how does the script/php know to insert the value of $wilma into the function if it's $fred that is mentioned in the function, not $wilma ?

 

Many thanks 

[Brandon Jaeger]

$fred is just a value of whatever is being sent through the function header.

[scanreg]

I see, it's kind of a place holder (I think)

 

Thanks 

[philipolson]

See also:

 

http://php.net/functions

[PFMaBiSmAd]

The parameter name in the function definition is the variable name that the function will use to reference that parameter inside the function. When the function is called, the parameter can be supplied from anything - string, number, expression, variable, or another function call.

[scanreg]

Super thanks, will eventually understand this stuff