Question

我看过很多地方，找不到我需要的一个很好的例子。我有一个按钮，提交时需要弹出一个表单。我过去使用input = hidden name这样做了。但是，我正在尝试使用if语句而不仅仅是变量。我会给你你的代码，希望你可以帮我找出我做错了什么。您可以看到我确实使用了隐藏名称，但我真的不知道如何将其合并到if语句中。

if($row[status] == 0) { print "<input type='image' src='images/rework-ticket.png' alt='Rework' value='Rework' name='button' style='height:50px; width:50px; '>"; }  
            elseif($row[status] == "Rework (In Progress)") { print "<img src='images/rework-ticket.png' alt='Rework' style='height:50px; width:50px; '>"; }


            print "<td align='center'>";
            print "<form method='post' action='test2.php'>";            
            print "<input type='image' src='images/rework-ticket.png' alt='Add Rework Ticket' value='Enter Employee ID' name='button' style='height:50px; width:50px; '>";
            print "<input type='hidden' name='proceed_to_rework' value='true'>";
            print "<input type='hidden' name='invoice_number' value='$row[invoice_number]'>";
            print "<input type='hidden' name='last_name' value='$row[last_name]'>";
            print "<input type='hidden' name='status' value='$status'>";
            print "Status:";
            print "<td><select name='status' size='1'>";
            if($status != NULL) { print "<option value='$status'>$status</option>"; }
            if($status != "Parts Prep (In Progress)") { echo "<option value='Parts Prep (In Progress)'>Parts Prep (In Progress)</option>"; }
            if($status != "Parts Prep (Complete)") { echo "<option value='Parts Prep (Complete)'>Parts Prep (Complete)</option>"; }     
            if($status != "Assembly (In Progress)") { echo "<option value='Assembly (In Progress)'>Assembly (In Progress)</option>"; }
            if($status != "Assembly (Complete)") { echo "<option value='Assembly (Complete)'>Assembly (Complete)</option>"; }       
            if($status != "Finish (In Progress)") { echo "<option value='Finish (In Progress)'>Finish (In Progress)</option>"; }
            if($status != "Finish (Complete)") { echo "<option value='Finish (Complete)'>Finish (Complete)</option>"; }     
            if($status != "Plumbing (In Progress)") { echo "<option value='Plumbing (In Progress)'>Plumbing (In Progress)</option>"; }
            if($status != "Plumbing (Complete)") { echo "<option value='Plumbing (Complete)'>Plumbing (Complete)</option>"; }
            print "</form>";
            print "</td>";

我非常感谢任何关于如何解决此代码而不是改进此问题的评论。

Answer 1

您可以使用if语句，如下所示。

<?php if (condition): ?>

    <!-- HTML here -->
    <?php if (anotherCondition): ?>
        <!-- HTML here -->
    <?php endif; ?>
    <!-- HTML again -->

    <?php if (anotherCondition): ?>
        <!-- HTML here -->
    <?php endif; ?>
    <!-- HTML again -->

<?php endif; ?>

通过这种方式，您不必使用那么多print语句。

阅读php docs中的示例。

Answer 2

使用数组而不是if语句。如果您希望将来添加更多选项，这也会有所帮助。此外，不是逐行输出HTML代码，而是尝试使用一个echo语句。

如果要从POST检索状态值，请先使用$status = $_POST['status'];

写$row[status]时要小心，因为你使用的是常量。我没有对其进行修改，但如果您想要$row[$status]，请在$之前添加status。

if($row[status] == 0) { 
    echo '
        <button type="button" id="Rework" >
            <img src="images/rework-ticket.png" alt="Rework" style="height:50px; width:50px; "></img>
        </button>'; 
} elseif($row[status] == "Rework (In Progress)") {
    echo '
        <button type="button" id="Rework" >
          <img src="images/rework-ticket.png" alt="Rework" style="height:50px; width:50px; "></img>
        </button>'; 
}

echo "
    <td align='center'>
    <form method='post' action='test2.php'>            
    <input type='image' src='images/rework-ticket.png' alt='Add Rework Ticket' value='Enter Employee ID' name='button' style='height:50px; width:50px; '>
    <input type='hidden' name='proceed_to_rework' value='true'>
    <input type='hidden' name='invoice_number' value='{$row[invoice_number]}'>
    <input type='hidden' name='last_name' value='{$row[last_name]}'>
    <input type='hidden' name='status' value='{$status}'>
    Status:
    <td><select name='status' size='1'>
";

$statusOptions = array(
    NULL,
    "Parts Prep (In Progress)",
    "Parts Prep (Complete)",
    "Assembly (In Progress)",
    "Assembly (Complete)",
    "Finish (In Progress)",
    "Finish (Complete)",
    "Plumbing (In Progress)",
    "Plumbing (Complete)"
);

foreach($statusOptions as $option){
    if($status != $option){
        echo "<option value='{$option}'>{$option}</option>";
    }
}
echo '</select>';

echo "</form>";
echo "</td>";
echo '
    <script type="text/javascript">
    function showDocument(){
        document.getElementById("ReworkForm").style.visibility="visible";
    }

    window.onload = function(){
        document.getElementById("ReworkForm").style.visibility="hidden";
        document.getElementById("Rework").addEventListener("click", showDocument);
    };
   </script>
    ';

隐藏表单并使用if语句

2 个答案: