データベースを検索し、指定されたフィールドに一致する行を返すフォームがあります。フィールドが空白のままの場合、他のフィールドが一致する限り、その列が何であるかは問題ではないというオプションをユーザーに提供したいと思います。現在、フィールドを「空白」のままにすると、データベース内のすべてのエントリが返されます。
Hair Color: <select name="hair">
<option value="hairall" selected="selected">--</option>
<option value="black" >Black</option>
<option value="brown">Brown</option>
<option value="blonde">Blonde</option>
<option value="white">White</option>
<option value="red">Red</option>
<option value="other">Other</option>
</select>
Height: <select name="height">
<option value="heightall" selected="selected">--</option>
<option value="smaller">Smaller</option>
<option value="small">Small</option>
<option value="average">Average - 70in</option>
<option value="tall">Tall</option>
<option value="taller">Taller</option>
</select>
Body Type: <select name="body">
<option value="bodyall" selected="selected">--</option>
<option value="skinny">Skinny</option>
<option value="average">Average - 194lb</option>
<option value="heavy">Heavy</option>
</select>
Ethnicity: <select name="ethnicity">
<option value="ethnicityall" selected="selected">--</option>
<option value="white">White</option>
<option value="black">Black</option>
<option value="asian">Asian</option>
<option value="hispanic">Hispanic</option>
<option value="middleeast">Middle Eastern</option>
<option value="other">Other</option>
</select><br/>
<center><input type="submit" value="Find Me" name="submit" ></center>
</form>
</div>
<div id="results">
<?php
$submit = $_GET['submit'];
$gender = $_GET['gender'];
$hair = $_GET['hair'];
$height = $_GET['height'];
$body = $_GET['body'];
$race = $_GET['ethnicity'];
//Hair All/Specific
if ($hair=='hairall'){
$newhair = "black' OR `hair`='brown' OR `hair`='blonde' OR `hair`='white' OR `hair`='red' OR `hair`='other";
}else
$newhair=$hair;
//Height All/Specific
if ($height=='heightall'){
$newheight = "smaller' OR `height`='small' OR `height`='average' OR `height`='tall' OR `height`='taller";
}else
$newheight=$height;
//Body Type All/specific
if ($body=='bodyall'){
$newbody = "skinny' OR `body`='average' OR `body`='heavy";
}else
$newbody=$body;
//Etnicity All/Specific
if ($race=='ethnicityall'){
$newrace = "white' OR `race`='black' OR `race`='asian' OR `race`='hispanic' OR `race`='middleeast' OR `race`='other";
}else
$newrace=$race;
//echo "$newhair <br/> $newheight <br/> $newbody <br/> $newrace<br/>";
require 'connect.inc.php';
$query = "SELECT * FROM `table` WHERE `gender`='$gender' AND `hair`='$newhair' AND `height`='$newheight' AND `body`='$body' AND `race`='$race' ORDER BY `id` DESC";