我已经编写了跟踪鼠标位置的代码，但我的代码只适用于字符串，而不适用于我上传的图像。它正在生成图像图标，而不是图像。
<form action="click.php" method="post" enctype="multipart/form-data">
<h3>Select image to upload:<br/></h3>
<input type="file" name="fileToUpload" id="fileToUpload" accept="image/*"/>
click.php
<script>
function getPos(e) {
x = e.clientX;
y = e.clientY;
cursor = "Your Mouse Position Is : " + x + " and " + y ;
document.getElementById("displayArea").innerHTML=cursor
}
function stopTracking() {
document.getElementById("displayArea").innerHTML="";
}
</script>
</head>
<body>
<div id="focusArea" onmousemove="getPos(event)" onclick="merge" onmouseout="stopTracking()">
<?php
$target_dir = "uploads/";
$target_file = $target_dir . basename($_FILES["fileToUpload"]["name"]);
$uploadOk = 1;
$imageFileType = pathinfo($target_file,PATHINFO_EXTENSION);
// Check if image file is a actual image or fake image
if (isset($_POST["submit"])) {
$check = getimagesize($_FILES["fileToUpload"]["tmp_name"]);
if ($check !== false) {
move_uploaded_file($_FILES["fileToUpload"]["tmp_name"], $target_file);
$uploadOk = 1;
} else {
$uploadOk = 0;
}
}
header("Content-type: image/png");
imagepng($target_file);
imagedestroy($target_file);
?>
</div>
<p id="displayArea"></p>
标题不能设置在任何内容之后，它们必须位于任何输出的第一行。
这条线:
header("Content-type: image/png");
不属于这里。启用如下错误:
ini_set('display_errors', 1);
ini_set('error_reporting', E_ALL);
你会得到一个错误，告诉你头不能设置