php - I'm getting a "syntax error, unexpected T_VARIABLE" error. I don't see what I'm doing wrong?

itemprop="text">

I'm getting this error:
"PHP
Parse error: syntax error, unexpected T_VARIABLE in /var/www/vhosts/... on line
66"

Here's my
code:

function combine($charArr,
            $k) {

 $currentsize = sizeof($charArr);


            static $combs = array();
 static $originalsize = $currentsize; ###### <--
            LINE 66 ######
 static $firstcall = true;

 if
            ($originalsize >= $k) {

 # Get the First Combination 

            $comb = '';
 if ($firstcall) { //if this is first call
 for ($i =
            $originalsize-$k; $i < $originalsize; $i++) {

 $comb .=
            $charArr[$i];
 }
 $combs[] = $comb; //append the first combo to the
            output array
 $firstcall = false; //we only want to do this during the first
            iteration
 }
 ....

            ....
}

Any
idea what's wrong?

itemprop="text">

class="normal">Answer

Quoting
rel="noreferrer">the manual (that page is about static
properties, but the same applies for variables)
:

Like any other PHP static variable, static
properties may only be
initialized using a literal
or
constant; expressions are not
allowed. So while
you may initialize
a static property to an integer or


array (for instance), you may not
initialize it to another variable,
to
a function return value, or to an

object.

You are
using this :

static $originalsize
            =
            $currentsize;

Which
is initializing with an expression -- and not a
constant.

And here's href="http://fr2.php.net/manual/en/language.variables.scope.php#language.variables.scope.static"
rel="noreferrer">the manual's section that says quite the same about static
variables :

Static variables may be declared as
seen in the examples above.
Trying to
assign values to these variables which
are the result of
expressions will

cause a parse
error.

And, just
in case, here's rel="noreferrer">about
expressions.

In your case,
to avoid that problem, I suppose you could modify your code, so it looks like this
:

$currentsize =
            sizeof($charArr);
static $originalsize = null;
if ($originalsize ===
            null) {

 $originalsize =
            $currentsize;
}

With
that :

• The static variable
  is initialized with a constant


• If its value is the
  constant one, assign the dynamic
  value.