Question

我在PHP中有一个表单。它没有被排除。我想对它进行排序。我怎么会这样做呢。这是我的以下PHP代码。提前感谢您的帮助。

<select id="school_name" name="school_name">
    <option value="">Select School</option>
    <?php for($c=0; $c<sizeof($school_details); $c++){?>                                    
    <option value="<?php echo stripslashes($school_details[$c]["title"]); ?>" 
    <?php if($school_details[$c]["title"]==$appInfo["school_name"]){?> selected="selected" <?php } ?> ><?php echo stripslashes($school_details[$c]["title"]); ?>
    </option>                                 
    <?php } ?>
</select>

Answer 1

尝试这样的事情：

$str = "<select id='school_name' name='school_name'>";
    $options = "";
    for($i = 0; $i<10;$i++)
    {
        $RandomNum = rand(0, 100);
        $options = "" . $options . ("<option value='$RandomNum'>&nbsp" . $RandomNum . "&nbsp </option>\n");
    }

    $optionsArray = explode("\n", $options);
    natsort($optionsArray);
    $sorted_option = implode("|",$optionsArray);

    $select = $str.$sorted_option."</select>";

    echo $select;

Answer 2

PHP提供了许多排序方法：http://www.php.net/manual/en/array.sorting.php

Answer 3

您可以实现用户定义的排序来实现此目的。假设你想按照标题的价值排序＆＃39;您只需在打开选择标记之前添加此元素：

<?php
uasort($school_details,'cmp');
function cmp($a,$b){
  if($a['title'] == $b['title']){return 0;}
  return ($a['title'] < $b['title']) ? -1 : 1; 
}
?>

PHP数组排序/选择选项表单

3 个答案: