(PHP 4, PHP 5, PHP 7)
switch 锟斤拷锟斤拷锟斤拷锟斤拷诰锟斤拷锟酵伙拷锟斤拷锟斤拷式锟斤拷一系锟斤拷 if 锟斤拷洹ｏ拷芏喑★拷锟斤拷锟斤拷锟揭拷锟酵伙拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟绞斤拷锟斤拷锟杰多不同锟斤拷值锟饺较ｏ拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟侥革拷值锟斤拷执锟叫诧拷同锟侥达拷锟诫。锟斤拷锟斤拷锟斤拷 switch 锟斤拷锟斤拷锟斤拷途锟斤拷
Note: 注锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷圆锟酵拷锟�continue 锟斤拷锟斤拷锟斤拷玫锟� switch 锟较碉拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷 break锟斤拷锟斤拷锟斤拷锟窖拷锟斤拷锟斤拷锟揭伙拷锟� switch 锟斤拷希锟斤拷 continue 锟斤拷锟斤拷锟窖拷锟斤拷械锟斤拷锟揭伙拷锟窖拷锟斤拷锟斤拷锟� continue 2锟斤拷
Note:
注锟斤拷 switch/case 锟斤拷锟斤拷锟斤拷锟斤拷散锟饺斤拷锟斤拷
锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷使锟斤拷锟斤拷锟街诧拷同锟斤拷锟斤拷实锟斤拷同锟斤拷锟斤拷锟铰ｏ拷一锟斤拷锟斤拷一系锟叫碉拷 if 锟斤拷 elseif 锟斤拷洌拷锟揭伙拷锟斤拷锟� switch 锟斤拷洌�
Example #1 switch 锟结构
<?php
if ($i == 0) {
echo "i equals 0";
} elseif ($i == 1) {
echo "i equals 1";
} elseif ($i == 2) {
echo "i equals 2";
}
switch ($i) {
case 0:
echo "i equals 0";
break;
case 1:
echo "i equals 1";
break;
case 2:
echo "i equals 2";
break;
}
?>
Example #2 switch 锟结构锟斤拷锟斤拷锟斤拷锟街凤拷锟斤拷
<?php
switch ($i) {
case "apple":
echo "i is apple";
break;
case "bar":
echo "i is bar";
break;
case "cake":
echo "i is cake";
break;
}
?>
为锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷 switch 锟斤拷锟斤拷锟斤拷执锟叫的非筹拷锟斤拷要锟斤拷switch 锟斤拷锟揭伙拷薪锟揭伙拷械锟街达拷校锟绞碉拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟戒）锟斤拷锟斤拷始时没锟叫达拷锟诫被执锟叫★拷锟斤拷锟斤拷一锟斤拷 case 锟斤拷锟斤拷械锟街碉拷锟� switch 锟斤拷锟绞斤拷锟街灯ワ拷锟绞� PHP 锟脚匡拷始执锟斤拷锟斤拷洌憋拷锟� switch 锟侥筹拷锟斤拷谓锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟揭伙拷锟� break 锟斤拷锟轿癸拷锟斤拷锟斤拷锟斤拷锟斤拷 case 锟斤拷锟斤拷锟斤拷锟斤拷锟叫达拷锟� break 锟侥伙拷锟斤拷PHP 锟斤拷锟斤拷锟斤拷执锟斤拷锟斤拷一锟斤拷 case 锟叫碉拷锟斤拷锟轿★拷锟斤拷锟界：
<?php
switch ($i) {
case 0:
echo "i equals 0";
case 1:
echo "i equals 1";
case 2:
echo "i equals 2";
}
?>
锟斤拷锟斤拷锟斤拷锟� $i 锟斤拷锟斤拷 0锟斤拷PHP 锟斤拷执锟斤拷锟斤拷锟叫碉拷 echo 锟斤拷洌★拷锟斤拷 $i 锟斤拷锟斤拷 1锟斤拷PHP 锟斤拷执锟叫猴拷锟斤拷锟斤拷锟斤拷 echo 锟斤拷洹Ｖ伙拷械锟� $i 锟斤拷锟斤拷 2 时锟斤拷锟脚伙拷玫锟�"预锟斤拷"锟侥斤拷锟�——只锟斤拷示"i equals 2"锟斤拷锟斤拷锟皆ｏ拷锟斤拷锟斤拷锟斤拷 break 锟斤拷锟酵猴拷锟斤拷要锟斤拷锟斤拷使锟斤拷某些锟斤拷锟斤拷鹿锟斤拷锟斤拷锟斤拷锟斤拷锟结供锟斤拷锟斤拷时锟斤拷锟斤拷
锟斤拷 switch 锟斤拷锟斤拷锟斤拷锟斤拷锟街伙拷锟街狄伙拷尾锟斤拷锟斤拷锟斤拷锟矫匡拷锟� case 锟斤拷锟饺较★拷锟斤拷 elseif 锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷俅锟斤拷锟街碉拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷一锟斤拷锟津单的比斤拷要锟斤拷锟接得讹拷锟斤拷锟斤拷锟揭伙拷锟斤拷芏锟轿碉拷循锟斤拷锟叫ｏ拷锟斤拷么锟斤拷 switch 锟斤拷锟斤拷锟杰伙拷锟揭恍╋拷锟�
锟斤拷一锟斤拷 case 锟叫碉拷锟斤拷锟揭诧拷锟斤拷锟轿拷眨锟斤拷锟斤拷锟街伙拷锟斤拷锟斤拷锟斤拷锟斤拷锟阶拷频锟斤拷锟斤拷锟揭伙拷锟� case 锟叫碉拷锟斤拷洹�
<?php
switch ($i) {
case 0:
case 1:
case 2:
echo "i is less than 3 but not negative";
break;
case 3:
echo "i is 3";
}
?>
一锟斤拷 case 锟斤拷锟斤拷锟斤拷锟斤拷 default锟斤拷锟斤拷匹锟斤拷锟斤拷锟轿何猴拷锟斤拷锟斤拷 case 锟斤拷锟斤拷匹锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟界：
<?php
switch ($i) {
case 0:
echo "i equals 0";
break;
case 1:
echo "i equals 1";
break;
case 2:
echo "i equals 2";
break;
default:
echo "i is not equal to 0, 1 or 2";
}
?>
case 锟斤拷锟绞斤拷锟斤拷锟斤拷锟斤拷魏锟斤拷锟街滴拷锟斤拷锟斤拷偷谋锟斤拷式锟斤拷锟斤拷锟斤拷锟酵或浮碉拷锟斤拷锟皆硷拷锟街凤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟襟，筹拷锟斤拷锟斤拷锟角憋拷锟斤拷锟斤拷锟斤拷贸锟轿拷锟斤拷锟斤拷汀锟�
switch 支锟斤拷锟斤拷锟斤拷锓拷锟斤拷锟斤拷炭锟斤拷啤锟斤拷锟斤拷锟斤拷锟较拷锟�锟斤拷锟教匡拷锟狡碉拷锟斤拷锟斤拷锓�一锟节★拷
<?php
switch ($i):
case 0:
echo "i equals 0";
break;
case 1:
echo "i equals 1";
break;
case 2:
echo "i equals 2";
break;
default:
echo "i is not equal to 0, 1 or 2";
endswitch;
?>
锟斤拷锟斤拷使锟矫分号达拷锟斤拷 case 锟斤拷锟斤拷锟矫帮拷牛锟斤拷锟斤拷纾�
<?php
switch($beer)
{
case 'tuborg';
case 'carlsberg';
case 'heineken';
echo 'Good choice';
break;
default;
echo 'Please make a new selection...';
break;
}
?>