使用多個where子句選擇多個選項框

我有一個包含承包商和狀態的選擇框。用戶可以選擇任意數量的承包商或州進行搜索。如何使用此多選框獲取電子郵件地址？我的問題是，他們可以選擇多個承包商，多個州或根本沒有州，等等......使用多個where子句選擇多個選項框

我會如何在所有這些條件下獲取電子郵件？

選擇框：

<select name="CID[]" id="CID[]" class="chosen-select" multiple="multiple"> 
    <option value="All">All Active Contractors</option> 
    <?php foreach ($cq as $row): ?> 
    <option value="<?=$row['CID']?>"><?=$row['name']?></option> 
    <?php endforeach; ?> 
    <option value="AL">Alabama</option> 
    <option value="AK">Alaska</option> 
    <option value="AZ">Arizona</option> 
    <option value="AR">Arkansas</option> 
    <option value="CA">California</option> 
    <option value="CO">Colorado</option> 
    <option value="CT">Connecticut</option> 
    <option value="DE">Delaware</option> 
    <option value="FL">Florida</option> 
    <option value="GA">Georgia</option> 
    <option value="HI">Hawaii</option> 
    <option value="ID">Idaho</option> 
    <option value="IL">Illinois</option> 
    <option value="IN">Indiana</option> 
    <option value="IA">Iowa</option> 
    <option value="KS">Kansas</option> 
    <option value="KY">Kentucky</option> 
    <option value="LA">Louisiana</option> 
    <option value="ME">Maine</option> 
    <option value="MD">Maryland</option> 
    <option value="MA">Massachusetts</option> 
    <option value="MI">Michigan</option> 
    <option value="MN">Minnesota</option> 
    <option value="MS">Mississippi</option> 
    <option value="MO">Missouri</option> 
    <option value="MT">Montana</option> 
    <option value="NE">Nebraska</option> 
    <option value="NV">Nevada</option> 
    <option value="NH">New Hampshire</option> 
    <option value="NJ">New Jersey</option> 
    <option value="NM">New Mexico</option> 
    <option value="NY">New York</option> 
    <option value="NC">North Carolina</option> 
    <option value="ND">North Dakota</option> 
    <option value="OH">Ohio</option> 
    <option value="OK">Oklahoma</option> 
    <option value="OR">Oregon</option> 
    <option value="PA">Pennsylvania</option> 
    <option value="RI">Rhode Island</option> 
    <option value="SC">South Carolina</option> 
    <option value="SD">South Dakota</option> 
    <option value="TN">Tennessee</option> 
    <option value="TX">Texas</option> 
    <option value="UT">Utah</option> 
    <option value="VT">Vermont</option> 
    <option value="VA">Virginia</option> 
    <option value="WA">Washington</option> 
    <option value="WV">West Virginia</option> 
    <option value="WI">Wisconsin</option> 
    <option value="WY">Wyoming</option> 
    </select>

查詢肥胖型：

$contractorquery = $db->prepare("SELECT CM.email, HO.name, HO.lastname, LL.state 
FROM tbl_ContactMethods AS CM 
JOIN tbl_HomeOwner AS HO ON HO.HID = CM.HID 
JOIN tbl_Locations AS LL ON LL.HID=HO.HID 
JOIN tbl_PressControl AS PC ON PC.HID = HO.HID 
WHERE PC.CID = ??????? AND LL.state = ?????? AND PC.active = 1 AND CM.email IS NOT NULL"); 
$contractorquery->execute(); 
$cq = $contractorquery->fetchAll();

我有查詢得到的一切，如果他們選擇「全部」，因爲我剛拿出大部分的where子句中：

SELECT CM.email, HO.name, HO.lastname 
FROM tbl_ContactMethods AS CM 
JOIN tbl_HomeOwner AS HO ON HO.HID = CM.HID 
JOIN tbl_PressControl AS PC ON PC.HID = HO.HID 
WHERE PC.active = 1 AND CM.email IS NOT NULL

來源

2014-07-14 ChaseC

您必須使用IN（'contratcor1'，'contractor2'，'等等'）

$contractorquery = $db->prepare("SELECT CM.email, HO.name, HO.lastname, LL.state 
FROM tbl_ContactMethods AS CM 
JOIN tbl_HomeOwner AS HO ON HO.HID = CM.HID 
JOIN tbl_Locations AS LL ON LL.HID=HO.HID 
JOIN tbl_PressControl AS PC ON PC.HID = HO.HID 
WHERE PC.CID IN('contratcor1','contractor2','and so ON') AND LL.state = ?????? AND  
PC.active = 1 AND CM.email IS NOT NULL");

來源

2014-07-14 17:12:04

使用多個where子句選擇多個選項框

回答

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