<html>
<body>
$str1 = "Hello";
$str2 = "Hello world!";
echo vsprintf("[%s]",array($str1))."<br>";
echo vsprintf("[%8s]",array($str1))."<br>";
echo vsprintf("[%-8s]",array($str1))."<br>";
echo vsprintf("[%08s]",array($str1))."<br>";
echo vsprintf("[%'*8s]",array($str1))."<br>";
echo vsprintf("[%8.8s]",array($str2))."<br>";
</body>
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</html>