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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<!DOCTYPE html>
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<html>
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<body>
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<?php
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$arr1 = $arr2 = array("pic1","pic2","pic10","pic01","pic100","pic20","pic30","pic200");
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echo "标准字符串比较"."<br>";
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usort($arr1,"strcmp");
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print_r($arr1);
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echo "<br>";
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echo "自然顺序字符串比较"."<br>";
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usort($arr2,"strnatcmp");
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print_r($arr2);
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?>
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</body>
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</html>
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