📄 1.php
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<html>
<head>
<title> 1 </title>
</head>
<body>
<?php
$original = array("1" => 27, "2" => 31, "3" => 43,"4" => 56, "5" => 11);
print("数组中的元素依次是:27,31,43,56,11 <br />");
?>
<?php
$total=0;
foreach ($original as $key => $value)
$total=$total+$value;
$final=$total/$key;
print("数组的平均值是：$final <br />");
$new = $original;
sort($new);
?>
<?php
foreach ($original as $key2 => $value)
{
if(($key2<$key/2)&&($key2>$key/2-1))
print("数组的中值是:$value <br />");
}
?>
</body>
</html>
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