Question

我是php新手，我在大多数代码中遇到以下错误。而不是输出，解析错误（！）解析错误：语法错误，第12行出现意外'='。每个代码都会显示此错误。

<html>
<head>
<title>Check For Blank Text Boxes</title>
</head>
<body>
<?php 
$first ="";
$second = "";

function display_error_message($user_text) {

if ($user_text = = "") {
print "One or more blank text boxes detected";
} 
else {
print "Text boxes OK";
}
}

if ($_SERVER['REQUEST_METHOD'] = = 'POST'){

$first = trim($_POST['first']);
$second = trim($_POST['second']);

display_error_message($first);
display_error_message($second);
}

?>
</body>

<FORM Method = "POST" action ="formFunction.php">

First Name: <INPUT TYPE = "text" name = "first" value ="<?=$first?>">
Surnmae: <INPUT TYPE = "text" name = "second" value ="<?=$second?>">

<input type="submit" name="Submit" value="Submit">
</FORM>
</html>

Answer 1

试试这个，

if ($user_text == "") { 

}

问题是＆＃39; =＆＃39;之间的空间。迹象

Answer 2

比较php中使用的值== not = =。

空文本框中{=''的php解析错误

2 个答案: