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ÎļþÃû£ºflow_control.php

<?php
//µ¥¸öifÓï¾ä
echo " <b>µ¥¸öifÓï¾äʵÏÖ¶à·ÖÖ§½á¹¹£º </b> <br>";
$A=85;

if($A <60)
echo "Ó¢Óï³É¼¨²»¼°¸ñ£¡ <br>";

if($A>=60&&$A <70)
echo "Ó¢Óï³É¼¨ÊDZûµÈ£¡ <br>";

if($A>=70&&$A <90)
echo "Ó¢Óï³É¼¨ÊÇÒҵȣ¡ <br>";

if($A>=90)
echo "Ó¢Óï³É¼¨ÊǼ׵ȣ¡ <br>";

echo " <br>";

//³²×´if-elseÓï¾äʵÏÖ¶à·ÖÖ§½á¹¹
echo " <b>³²×´if-elseÓï¾äʵÏÖ¶à·ÖÖ§½á¹¹£º </b> <br>";

if($A>=60){
if($A>=70){
if($A>=90){
echo "Ó¢Óï³É¼¨ÊǼ׵ȣ¡ <br>";
}else{
echo "Ó¢Óï³É¼¨ÊÇÒҵȣ¡ <br>";
}
}else{
echo "Ó¢Óï³É¼¨ÊDZûµÈ£¡ <br>";
}
}else{
echo "Ó¢Óï³É¼¨²»¼°¸ñ£¡ <br>";
}

echo " <br>";

//ʹÓÃelseifÓï¾äʵÏÖ¶à·ÖÖ§½á¹¹
echo " <b>ʹÓÃelseifÓï¾äʵÏÖ¶à·ÖÖ§½á¹¹£º </b> <br>";

if($A>=90)
echo "Ó¢Óï³É¼¨ÊǼ׵ȣ¡ <br>";
elseif($A>=70)
echo "Ó¢Óï³É¼¨ÊÇÒҵȣ¡ <br>";
elseif($A>=60)