案例:PHP案例     状态:不可编辑再运行    进入竖版
 运行结果 
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<?php
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$favcolor="red";
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switch ($favcolor) {
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   case "red":
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     echo "Your favorite color is red!";
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     break;
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   case "blue":
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     echo "Your favorite color is blue!";
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     break;
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   case "green":
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     echo "Your favorite color is green!";
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     break;
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   default:
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     echo "Your favorite color is neither red, blue, or green!";
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}
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?>