Hallo所以这就是我所拥有的:
test.php
<form action="index.php" method="post">
<input type="text" name="nick">
<input type="submit" name="test">
</form>
index.php
<?php
if(isset($_POST['test'])) {
$bg = imagecreatefrompng('img/sygn/1.png') or die("t");
$font = "others/rte.ttf";
$blackColor = imagecolorallocate($bg, 47, 53, 62);
$diamondColor = imagecolorallocate($bg, 140, 244, 226);
$emeraldColor = imagecolorallocate($bg, 92, 244, 149);
$goldCollor = imagecolorallocate($bg, 234, 238, 87);
header("Content-type: image/png");
imagettftext($bg, 29, 0, 5, 33, $blackColor, $font, 'Username');
imagettftext($bg, 17, 0, 360, 83, $goldCollor, $font, '20');
imagettftext($bg, 17, 0, 360, 43, $emeraldColor, $font, '20');
imagettftext($bg, 28, 0, 50, 125, $diamondColor, $font, '400');
imagepng($bg);
imagepng($bg, "users/image.png");
imagedestroy($bg);
}
?>
我想在点击按钮后显示图像。但它不起作用,我没有得到任何图像,只有空白的一面。如果我删除If语句,它工作正常。如果我添加:
echo '<input type="text">'
在第一行中,图像生成器无法正常工作。与示例相同:
include form.php
这就是我得到的:
http://screenshot.net/pjg6du1
试试这个:
if(isset($_POST['nick']) && $_POST['nick'] != '') {
//my code
}
您需要为您的输入提交设置如下值:
<input type="submit" value="Submit" name="submit" />
类似的另一个答案
- 检查所有路径是否正确(img、字体和用户目录)
- 你的if语句是正确的
- 在您的页面上添加
- 它有效
imagepng在用户目录中创建图像,但不会在页面上显示。
下面的正确代码:
<html>
<head>
<?php
if(isset($_POST['test'])) {
$bg = imagecreatefrompng('img/sygn/1.png') or die("t");
$font = "others/rte.ttf";
$blackColor = imagecolorallocate($bg, 47, 53, 62);
$diamondColor = imagecolorallocate($bg, 140, 244, 226);
$emeraldColor = imagecolorallocate($bg, 92, 244, 149);
$goldCollor = imagecolorallocate($bg, 234, 238, 87);
header("Content-type: image/png");
imagettftext($bg, 29, 0, 5, 33, $blackColor, $font, 'Username');
imagettftext($bg, 17, 0, 360, 83, $goldCollor, $font, '20');
imagettftext($bg, 17, 0, 360, 43, $emeraldColor, $font, '20');
imagettftext($bg, 28, 0, 50, 125, $diamondColor, $font, '400');
imagepng($bg);
imagepng($bg, "users/image.png");
imagedestroy($bg);
}
?>
</head>
<body>
<form action="test.php" method="post">
<input type="text" name="nick">
<input type="submit" name="test">
</form>
<img src="users/image.png" />
</body>
</html>