Question

嗨，我有這個和工作正常，除了以下問題。

echo "<form method='post' action=''>"; 
    echo " <input type='text' name='txt1' id='txt1' value=".$_SESSION['txt1'].">"; 
    echo " <input type='submit' name='sendtwo' id='sendtwo' value='TwoClick'>"; 
    echo "</form>"; 
<A submit button here to send the form data> 

的問題是，如果我有這樣John在文本框中的值，當我提出我保留原有用戶在文本框中鍵入單詞Jonn形式。但是，如果用戶輸入John Carter，當表單被提交時，它只保留John。換句話說，文本僅限於文本之間的第一個空格。我如何保留整個文本？

編輯

<?php 
    if(isset($_POST['sendone'])) 
    { 
    echo "Hello"; 
    echo "<form method='post' action=''>"; 
    echo " <input type='text' name='txt1' id='txt1'>"; 
    echo " <input type='submit' name='sendtwo' id='sendtwo' value='TwoClick'>"; 
    echo "</form>"; 
    } 
    if(isset($_POST['sendtwo'])) 
    { 
    if($_POST['txt1']=='') 
    { 
     echo "Hello"; 
     echo "<form method='post' action=''>"; 
     echo " <input type='text' name='txt1' id='txt1'>"; 
     echo " <input type='submit' name='sendtwo' id='sendtwo' value='TwoClick'>"; 
     echo "</form>"; 
     echo "Empty"; 
    } 
    else 
    { 
     $_SESSION['txt1'] = $_POST['txt1']; 
     echo "Hello"; 
     echo "<form method='post' action=''>"; 
     echo " <input type='text' name='txt1' id='txt1' value=".$_SESSION['txt1'].">"; 
     echo " <input type='submit' name='sendtwo' id='sendtwo' value='TwoClick'>"; 
     echo "</form>"; 
     echo "Hit success!";  
    } 
    } 
    ?> 

Answer 1

您需要包括圍繞價值的單引號的value= attribue時echo荷蘭國際集團的_SESSION["txt1"]，否則由此產生的HTML是無效的..這樣的：

<?php 
    if(isset($_POST['sendone'])) 
    { 
    echo "Hello"; 
    echo "<form method='post' action=''>"; 
    echo " <input type='text' name='txt1' id='txt1'>"; 
    echo " <input type='submit' name='sendtwo' id='sendtwo' value='TwoClick'>"; 
    echo "</form>"; 
    } 
    if(isset($_POST['sendtwo'])) 
    { 
    if($_POST['txt1']=='') 
    { 
     echo "Hello"; 
     echo "<form method='post' action=''>"; 
     echo " <input type='text' name='txt1' id='txt1'>"; 
     echo " <input type='submit' name='sendtwo' id='sendtwo' value='TwoClick'>"; 
     echo "</form>"; 
     echo "Empty"; 
    } 
    else 
    { 
     $_SESSION['txt1'] = $_POST['txt1']; 
     echo "Hello"; 
     echo "<form method='post' action=''>"; 

     // check out this line here: 
     echo " <input type='text' name='txt1' id='txt1' value='" . htmlspecialchars($_SESSION['txt1']) . "'>"; 

     echo " <input type='submit' name='sendtwo' id='sendtwo' value='TwoClick'>"; 
     echo "</form>"; 
     echo "Hit success!";  
    } 
    } 
?> 

但是，它的值得一提的是，它在性能上更好（可讀性更強），以儘可能使用純HTML，並且只需使用echo作爲您希望包含的變量。

Answer 2

檢查這個代碼。

<form name="" method="post"> 
<input type="text" name="txt1"> 
<input type="submit" name="sendtwo"> 
<input type="submit" name="sendone"> 
</form> 

<?php 
    if(isset($_POST['sendone'])) 
    { 
    echo "Hello"; 
    echo "<form method='post' action=''>"; 
    echo " <input type='text' name='txt1' id='txt1'>"; 
    echo " <input type='submit' name='sendtwo' id='sendtwo' value='TwoClick'>"; 
    echo "</form>"; 
    } 
    if(isset($_POST['sendtwo'])) 
    { 
    if($_POST['txt1']=='') 
    { 
     echo "Hello"; 
     echo "<form method='post' action=''>"; 
     echo " <input type='text' name='txt1' id='txt1'>"; 
     echo " <input type='submit' name='sendtwo' id='sendtwo' value='TwoClick'>"; 
     echo "</form>"; 
     echo "Empty"; 
    } 
    else 
    { 
     $_SESSION['txt1'] = $_POST['txt1']; 
     echo "Hello"; 
     echo "<form method='post' action=''>"; 

     // check out this line here: 
     echo " <input type='text' name='txt1' id='txt1' value='" . $_SESSION['txt1'] . "'>"; 

     echo " <input type='submit' name='sendtwo' id='sendtwo' value='TwoClick'>"; 
     echo "</form>"; 
     echo "Hit success!";  
    } 
    } 
?>