Photoshop Learning website PHP Learning notes function Declaration II

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/*
* 1. Intrinsic functions: PHP can declare functions inside a function
* The purpose is to call inside the function
* Used to help external functions complete some sub-functions
*
* 2. Recursive function: Call your own function name within yourself
*
* 3. Reusing functions
*
* Require: for static inclusion
* Include: for dynamic inclusion
* Require_once: For static inclusion, including only once
* Include_once: For dynamic inclusion, including only once
*
* 4. Use of some system functions
* Resource =opendir ("directory Name")
* READDIR (Resources)
*
*
*/
Intrinsic functions
Function score ($php, $java, $dotnet)
{
function php ($php)
{
if ($php >60)
return "Pass";
Else
Return "Failed";
}
function Java ($java)
{
if ($java >60)
return "Pass";
Else
Return "Failed";
}
function dotnet ($dotnet)
{
if ($dotnet >60)
return "Pass";
Else
Return "Failed";
}
$total = $php + $java + $dotnet;
$AGV = $total/3;
echo "Your PHP score is {$php} points,". PHP ($php). "
";
echo "Your Java score is {$java} points,". Java ($java). "
";
echo "Your dotnet score is {$dotnet},". dotnet ($dotnet). "
";
echo "Your total score is: {$total}
";
echo "Your average score is: {$AGV}
";
}
Score (50,90,70);
Recursive functions
Function Demo ($num)
{
echo $num. "
";
if ($num >0)
Demo ($num-1);
Else
echo "--------------------------------
";
echo $num. "
";
}
Demo (10);
function Total ($dirname,& $dirnum,& $filename)
{
$dir =opendir ($dirname);
Readdir ($dir). "
";
Readdir ($dir). "
";
while ($filename =readdir ($dir))
{
$newfile = $dirname. " /". $filename;
echo $filename. "
";
if (Is_dir ($filename
}
}
$dirnum = 0;
$filenum = 0;
Total ("C:/windows", $dirnum, $filenum);
echo "Total directory:". $dirnum. "
";
echo "Total Files:". $filenum. "
";
?>

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