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$beer = 'heineken';
echo "he drank some $beers"; //Êä³ö"he drank some"
echo "he drank some ${beer}s";//Êä³ö"he drand some hinekens"
$arr = array('first'=>'here','second'=>'there');
echo "{$arr['first']} is fine."; //Êä³ö"here is fine"
?>
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$student[0][1]="ÊÇ";
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mysql_select_db("DBname");
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function random($length) {
$hash = '';
$chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789abcdefghijklmnopqrstuvwxyz';
$max = strlen($chars)-1;
$length=4;//³¤¶È×ÔÐÐÉ趨
mt_srand((double)microtime() * 1000000);
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