输入字段已设置,即使它们未填充也是如此

问题描述 投票:0回答:1

早上好,乡亲们,

我有以下PHP函数来创建表单。

echo "<form action='dashboard_ver_3.php' method='post'>

    <label> From Date: <input type='date' placeholder='-- select --' name='fromdate'></label>

    <label> To Date: <input type='date' placeholder='-- select --' name='todate'></label>

    <label> First: <input type='text'  name='fName'></label>

    <label> Last: <input type='text'  name='lName'></label>

    <label> Found: <select class='select' name='filterfound'></label>

        <option disabled selected value> -- select -- </option>
                <option value='GLASSDOOR'>Glassdoor</option>
                <option value='INDEED'>Indeed</option>
                <option value='CRAIGSLIST'>Craigslist</option>
                <option value='MONSTER'>Monster</option>
                <option value='FACEBOOK'>Facebook</option>
                <option value='FRIEND'>Friend</option>
                <option value='FLYER'>Flyer</option>
                <option value='GOOGLE'>Google</option>
                <option value='RECRUITER'>Recruiter</option>
                <option value='NEWSPAPER'>Newspaper</option>
                <option value='WALK-IN'>Walk-in</option>
                <option value='OTHER'>Other</option>
        </select>

    <label>Filter by Center: <select class='select' name='filtercenter'></label>

        <option disabled selected value> -- select -- </option>
                <option value='CAM'>Cambridge, MA</option>
                <option value='WOR'>Worcester, MA</option>
                <option value='FLL'>Ft. Lauderdale, FL</option>
                <option value='COL'>Columbia, MO</option>
                <option value='DUR'>Durham, NC</option>
        </select>



    <input class='submit' type='submit' name='search' value='Search applications ...' />

</form>";

我有以下if语句按姓氏,名字以及姓氏和名字进行搜索。 if语句中的函数都可以正常工作。

if(empty($_POST['filtercenter']) && isset($_POST['fName']) && isset($_POST['lName']) && empty($_POST['filterfound']))
{
    echo "<br>bc<br>";
    echo sfName_lName();

}
if(empty($_POST['filtercenter']) && isset($_POST['fName']) && empty($_POST['lName']) && empty($_POST['filterfound']))
{
    echo "<br>b<br>";
    echo sfName();

}
if(empty($_POST['filtercenter']) && empty($_POST['fName']) && isset($_POST['lName']) && empty($_POST['filterfound']))
{
    echo "<br>c<br>";
    echo slName();

}

问题是当我按名字,姓氏或两者搜索时;所有三个if语句都运行。如果我再次执行空搜索,则会运行所有这三个if语句。本质上,fName和lName字段始终设置,无论它们是否被填充。

值得一提的是,filtercenter和filterfound可以保持未填充状态,并且在发布时不会设置它们。我想知道为什么会这样。

php html
1个回答
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