??      count-while.php     
<html>
<head>
<title>6.2??????????????</title>
</head>

<body>
<h3>6.2??????????????</h3>
<h4>?count.php?while??????????</h4>
?50??????????????<br />

<?php
$tokuten = array(
52,29,58,98,100,91,27,51,92,85,61,90,75,14,12,95,61,90,47,12,94,7,15,14,95,61,97,59);

$max = count($tokuten);

#50????????????????????

$i = 0;
$sum = 0;
while($i < count($tokuten)){
if($tokuten[$i] >= 50){
echo "?50???????????\$tokuten[$i]???? $tokuten[$i] ????<br />\n";
$sum++;
}
$i = $i+1;

}
echo "<br />\n";
echo "??50?????????????? $sum ??????<br />\n";
echo "????????? $i ??????<br />\n";
?>

</body>
</html>