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在图片上加文字是论坛，博客，新闻网站上最喜欢用的功能，防止盗图。这里看看代码是如何实现的。 首先还是upload_image.php这个文件，注意这里的caption文本框中输入的内容最终会写到图片上面 ? php // 修改图片效果 $db = mysql_connect ('localhost','root
在图片上加文字是论坛，博客，新闻网站上最喜欢用的功能，防止盗图。这里看看代码是如何实现的。
首先还是upload_image.php这个文件，注意这里的caption文本框中输入的内容最终会写到图片上面
<span>php
</span><span>//</span><span>修改图片效果</span>
<span>$db</span> = <span>mysql_connect</span>('localhost','root','Ctrip07185419') or <span>die</span>('can not connect to database'<span>);
</span><span>mysql_select_db</span>('moviesite',<span>$db</span>) or <span>die</span>(<span>mysql_error</span>(<span>$db</span><span>));
</span><span>//</span><span>上传文件的路径</span>
<span>$dir</span> = 'D:\Serious\phpdev\test\images'<span>;
</span><span>//</span><span>设置环境变量
//putenv('GDFONTPATH='.'C:\Windows\Fonts');</span>
<span>$font</span> = "C:\Windows\Fonts\arial.ttf"<span>;
</span><span>//</span><span>upload_image.php页面传递过来的参数，如果是上传图片</span>
<span>if</span>(<span>$_POST</span>['submit'] == 'Upload'<span>)
{
</span><span>if</span>(<span>$_FILES</span>['uploadfile']['error'] !=<span> UPLOAD_ERR_OK)
{
</span><span>switch</span>(<span>$_FILES</span>['uploadfile']['error'<span>])
{
</span><span>case</span> UPLOAD_ERR_INI_SIZE:
<span>die</span>('The uploaded file exceeds the upload_max_filesize directive'<span>);
</span><span>break</span><span>;
</span><span>case</span> UPLOAD_ERR_FORM_SIZE:
<span>die</span>('The upload file exceeds the MAX_FILE_SIZE directive that was specified in the HTML form'<span>);
</span><span>break</span><span>;
</span><span>case</span> UPLOAD_ERR_PARTIAL:
<span>die</span>('The uploaded file was only partially uploaded'<span>);
</span><span>break</span><span>;
</span><span>case</span> UPLOAD_ERR_NO_FILE:
<span>die</span>('No file was uploaded'<span>);
</span><span>break</span><span>;
</span><span>case</span> UPLOAD_ERR_NO_TMP_DIR:
<span>die</span>('The server is missing a temporary folder'<span>);
</span><span>break</span><span>;
</span><span>case</span> UPLOAD_ERR_CANT_WRITE:
<span>die</span>('The server fail to write the uploaded file to the disk'<span>);
</span><span>break</span><span>;
</span><span>case</span> UPLOAD_ERR_EXTENSION:
<span>die</span>('The upload stopped by extension'<span>);
</span><span>break</span><span>;
}
}
</span><span>$image_caption</span> = <span>$_POST</span>['caption'<span>];
</span><span>$image_username</span> = <span>$_POST</span>['username'<span>];
</span><span>$image_date</span> = <span>date</span>('Y-m-d'<span>);
</span><span>list</span>(<span>$width</span>,<span>$height</span>,<span>$type</span>,<span>$attr</span>) = <span>getimagesize</span>(<span>$_FILES</span>['uploadfile']['tmp_name'<span>]);
</span><span>$error</span> = 'The file you upload is not a supported filetype'<span>;
</span><span>switch</span>(<span>$type</span><span>)
{
</span><span>case</span> IMAGETYPE_GIF:
<span>$image</span> = imagecreatefromgif(<span>$_FILES</span>['uploadfile']['tmp_name']) or <span>die</span>(<span>$error</span><span>);
</span><span>break</span><span>;
</span><span>case</span> IMAGETYPE_JPEG:
<span>$image</span> = imagecreatefromjpeg(<span>$_FILES</span>['uploadfile']['tmp_name']) or <span>die</span>(<span>$error</span><span>);
</span><span>break</span><span>;
</span><span>case</span> IMAGETYPE_PNG:
<span>$image</span> = imagecreatefrompng(<span>$_FILES</span>['uploadfile']['tmp_name']) or <span>die</span>(<span>$error</span><span>);
</span><span>break</span><span>;
</span><span>default</span>:
<span>break</span><span>;
}
</span><span>$query</span> = 'insert into images(image_caption,image_username,image_date) values("'.<span>$image_caption</span>.'" , "'.<span>$image_username</span>.'","'.<span>$image_date</span>.'")'<span>;
</span><span>$result</span> = <span>mysql_query</span>(<span>$query</span>,<span>$db</span>) or <span>die</span>(<span>mysql_error</span>(<span>$db</span><span>));
</span><span>$last_id</span> = <span>mysql_insert_id</span><span>();
</span><span>//</span><span> $imagename = $last_id.'.jpg';
// imagejpeg($image,$dir.'/'.$imagename);
// imagedestroy($image);</span>
<span>$image_id</span> = <span>$last_id</span><span>;
imagejpeg(</span><span>$image</span> , <span>$dir</span>.'/'.<span>$image_id</span>.'.jpg'<span>);
imagedestroy(</span><span>$image</span><span>);
}
</span><span>else</span> <span>//</span><span>如果图片已经上传，则从数据库中取图片名字</span>
<span>{
</span><span>$query</span> = 'select image_id,image_caption,image_username,image_date from images where image_id='.<span>$_POST</span>['id'<span>];
</span><span>$result</span> = <span>mysql_query</span>(<span>$query</span>,<span>$db</span>) or <span>die</span>(<span>mysql_error</span>(<span>$db</span><span>));
</span><span>extract</span>(<span>mysql_fetch_assoc</span>(<span>$result</span><span>));
</span><span>list</span>(<span>$width</span>,<span>$height</span>,<span>$type</span>,<span>$attr</span>) = <span>getimagesize</span>(<span>$dir</span>.'/'.<span>$image_id</span>.'.jpg'<span>);
}
</span><span>//</span><span>如果是保存图片</span>
<span>if</span>(<span>$_POST</span>['submit'] == 'Save'<span>)
{
</span><span>if</span>(<span>isset</span>(<span>$_POST</span>['id']) && <span>ctype_digit</span>(<span>$_POST</span>['id']) && <span>file_exists</span>(<span>$dir</span>.'/'.<span>$_POST</span>['id'].'.jpg'<span>))
{
</span><span>$image</span> = imagecreatefromjpeg(<span>$dir</span>.'/'.<span>$_POST</span>['id'].'.jpg'<span>);
}
</span><span>else</span><span>
{
</span><span>die</span>('invalid image specified'<span>);
}
</span><span>$effect</span> = (<span>isset</span>(<span>$_POST</span>['effect'])) ? <span>$_POST</span>['effect'] : -1<span>;
</span><span>switch</span>(<span>$effect</span><span>)
{
</span><span>case</span> IMG_FILTER_NEGATE:<span>
imagefilter(</span><span>$image</span> , IMG_FILTER_NEGATE); <span>//</span><span>将图像中所有颜色反转</span>
<span>break</span><span>;
</span><span>case</span> IMG_FILTER_GRAYSCALE:<span>
imagefilter(</span><span>$image</span> , IMG_FILTER_GRAYSCALE); <span>//</span><span>将图像转换为灰度的</span>
<span>break</span><span>;
</span><span>case</span> IMG_FILTER_EMBOSS:<span>
imagefilter(</span><span>$image</span> , IMG_FILTER_EMBOSS); <span>//</span><span>使图像浮雕化</span>
<span>break</span><span>;
</span><span>case</span> IMG_FILTER_GAUSSIAN_BLUR:<span>
imagefilter(</span><span>$image</span> , IMG_FILTER_GAUSSIAN_BLUR); <span>//</span><span>用高斯算法模糊图像</span>
<span>break</span><span>;
}
</span><span>if</span>(<span>isset</span>(<span>$_POST</span>['emb_caption'<span>]))
{
imagettftext(</span><span>$image</span> , 12 , 0 , 20 , 20 , 0 , <span>$font</span> , <span>$image_caption</span><span>);
}
imagejpeg(</span><span>$image</span> , <span>$dir</span>.'/'.<span>$_POST</span>['id'].'.jpg' , 100<span>);
</span>?>
<title>Here is your pic!</title>
<h1 id="Your-image-has-been-saved">Your image has been saved!</h1>
<img src="/static/imghw/default1.png" data-src="/inc/test.jsp?url=http%3A%2F%2Fimages.cnitblog.com%2Fi%2F72678%2F201405%2F152205020151940.png&refer=http%3A%2F%2Fwww.cnblogs.com%2Ftylerdonet%2Fp%2F3731018.html" class="lazy" id alt="php给图片加文字" >.jpg" alt="" />
<span>php
}
</span><span>else</span><span>
{
</span>?>
<title>Here is your pic!</title>
<h1 id="So-how-does-it-feel-to-be-famous">So how does it feel to be famous?</h1>
<p>Here is the picture you just uploaded to your servers:</p>
<!--<img src="/static/imghw/default1.png" data-src="/inc/test.jsp?url=http%3A%2F%2Fimages.cnitblog.com%2Fi%2F72678%2F201405%2F152205020151940.png&refer=http%3A%2F%2Fwww.cnblogs.com%2Ftylerdonet%2Fp%2F3731018.html" class="lazy" alt="" style="max-width:90%" />-->
<span>php
</span><span>if</span>(<span>$_POST</span>['submit'] == 'Upload'<span>)
{
</span><span>$imagename</span> = 'images/'.<span>$image_id</span>.'.jpg'<span>;
}
</span><span>else</span><span>
{
</span><span>$imagename</span> = 'image_effect.php?id='.<span>$image_id</span>.'&e='.<span>$_POST</span>['effect'<span>];
</span><span>if</span>(<span>isset</span>(<span>$_POST</span>['emb_caption'<span>]))
{
</span><span>$imagename</span> .= '&capt='.<span>urlencode</span>(<span>$image_caption</span><span>);
}
}
</span>?>
<img src="/static/imghw/default1.png" data-src="/inc/test.jsp?url=http%3A%2F%2Fimages.cnitblog.com%2Fi%2F72678%2F201405%2F152205020151940.png&refer=http%3A%2F%2Fwww.cnblogs.com%2Ftylerdonet%2Fp%2F3731018.html" class="lazy" style="max-width:90%" alt="">
Salin selepas log masuk
Salin selepas log masuk
| Image save as: | $image_id?> |
| Height: | echo $height;?> |
| Widht: | echo $width;?> |
| Upload date: | echo $image_date;?> |
You may apply a special effect to your image from the list of option below. Note:saving an image with any of the filters applied can be undone
php } ?>注意这里有个问题，选择字体的时要加上绝对路径并且带上后缀.tff，否则的话是看不到图片的，下面的代码是image_effect.php
<span>php
</span><span>//</span><span>修改图片效果</span>
<span>$db</span> = <span>mysql_connect</span>('localhost','root','Ctrip07185419') or <span>die</span>('can not connect to database'<span>);
</span><span>mysql_select_db</span>('moviesite',<span>$db</span>) or <span>die</span>(<span>mysql_error</span>(<span>$db</span><span>));
</span><span>//</span><span>上传文件的路径</span>
<span>$dir</span> = 'D:\Serious\phpdev\test\images'<span>;
</span><span>//</span><span>设置环境变量
//putenv('GDFONTPATH='.'C:\Windows\Fonts');</span>
<span>$font</span> = "C:\Windows\Fonts\arial.ttf"<span>;
</span><span>//</span><span>upload_image.php页面传递过来的参数，如果是上传图片</span>
<span>if</span>(<span>$_POST</span>['submit'] == 'Upload'<span>)
{
</span><span>if</span>(<span>$_FILES</span>['uploadfile']['error'] !=<span> UPLOAD_ERR_OK)
{
</span><span>switch</span>(<span>$_FILES</span>['uploadfile']['error'<span>])
{
</span><span>case</span> UPLOAD_ERR_INI_SIZE:
<span>die</span>('The uploaded file exceeds the upload_max_filesize directive'<span>);
</span><span>break</span><span>;
</span><span>case</span> UPLOAD_ERR_FORM_SIZE:
<span>die</span>('The upload file exceeds the MAX_FILE_SIZE directive that was specified in the HTML form'<span>);
</span><span>break</span><span>;
</span><span>case</span> UPLOAD_ERR_PARTIAL:
<span>die</span>('The uploaded file was only partially uploaded'<span>);
</span><span>break</span><span>;
</span><span>case</span> UPLOAD_ERR_NO_FILE:
<span>die</span>('No file was uploaded'<span>);
</span><span>break</span><span>;
</span><span>case</span> UPLOAD_ERR_NO_TMP_DIR:
<span>die</span>('The server is missing a temporary folder'<span>);
</span><span>break</span><span>;
</span><span>case</span> UPLOAD_ERR_CANT_WRITE:
<span>die</span>('The server fail to write the uploaded file to the disk'<span>);
</span><span>break</span><span>;
</span><span>case</span> UPLOAD_ERR_EXTENSION:
<span>die</span>('The upload stopped by extension'<span>);
</span><span>break</span><span>;
}
}
</span><span>$image_caption</span> = <span>$_POST</span>['caption'<span>];
</span><span>$image_username</span> = <span>$_POST</span>['username'<span>];
</span><span>$image_date</span> = <span>date</span>('Y-m-d'<span>);
</span><span>list</span>(<span>$width</span>,<span>$height</span>,<span>$type</span>,<span>$attr</span>) = <span>getimagesize</span>(<span>$_FILES</span>['uploadfile']['tmp_name'<span>]);
</span><span>$error</span> = 'The file you upload is not a supported filetype'<span>;
</span><span>switch</span>(<span>$type</span><span>)
{
</span><span>case</span> IMAGETYPE_GIF:
<span>$image</span> = imagecreatefromgif(<span>$_FILES</span>['uploadfile']['tmp_name']) or <span>die</span>(<span>$error</span><span>);
</span><span>break</span><span>;
</span><span>case</span> IMAGETYPE_JPEG:
<span>$image</span> = imagecreatefromjpeg(<span>$_FILES</span>['uploadfile']['tmp_name']) or <span>die</span>(<span>$error</span><span>);
</span><span>break</span><span>;
</span><span>case</span> IMAGETYPE_PNG:
<span>$image</span> = imagecreatefrompng(<span>$_FILES</span>['uploadfile']['tmp_name']) or <span>die</span>(<span>$error</span><span>);
</span><span>break</span><span>;
</span><span>default</span>:
<span>break</span><span>;
}
</span><span>$query</span> = 'insert into images(image_caption,image_username,image_date) values("'.<span>$image_caption</span>.'" , "'.<span>$image_username</span>.'","'.<span>$image_date</span>.'")'<span>;
</span><span>$result</span> = <span>mysql_query</span>(<span>$query</span>,<span>$db</span>) or <span>die</span>(<span>mysql_error</span>(<span>$db</span><span>));
</span><span>$last_id</span> = <span>mysql_insert_id</span><span>();
</span><span>//</span><span> $imagename = $last_id.'.jpg';
// imagejpeg($image,$dir.'/'.$imagename);
// imagedestroy($image);</span>
<span>$image_id</span> = <span>$last_id</span><span>;
imagejpeg(</span><span>$image</span> , <span>$dir</span>.'/'.<span>$image_id</span>.'.jpg'<span>);
imagedestroy(</span><span>$image</span><span>);
}
</span><span>else</span> <span>//</span><span>如果图片已经上传，则从数据库中取图片名字</span>
<span>{
</span><span>$query</span> = 'select image_id,image_caption,image_username,image_date from images where image_id='.<span>$_POST</span>['id'<span>];
</span><span>$result</span> = <span>mysql_query</span>(<span>$query</span>,<span>$db</span>) or <span>die</span>(<span>mysql_error</span>(<span>$db</span><span>));
</span><span>extract</span>(<span>mysql_fetch_assoc</span>(<span>$result</span><span>));
</span><span>list</span>(<span>$width</span>,<span>$height</span>,<span>$type</span>,<span>$attr</span>) = <span>getimagesize</span>(<span>$dir</span>.'/'.<span>$image_id</span>.'.jpg'<span>);
}
</span><span>//</span><span>如果是保存图片</span>
<span>if</span>(<span>$_POST</span>['submit'] == 'Save'<span>)
{
</span><span>if</span>(<span>isset</span>(<span>$_POST</span>['id']) && <span>ctype_digit</span>(<span>$_POST</span>['id']) && <span>file_exists</span>(<span>$dir</span>.'/'.<span>$_POST</span>['id'].'.jpg'<span>))
{
</span><span>$image</span> = imagecreatefromjpeg(<span>$dir</span>.'/'.<span>$_POST</span>['id'].'.jpg'<span>);
}
</span><span>else</span><span>
{
</span><span>die</span>('invalid image specified'<span>);
}
</span><span>$effect</span> = (<span>isset</span>(<span>$_POST</span>['effect'])) ? <span>$_POST</span>['effect'] : -1<span>;
</span><span>switch</span>(<span>$effect</span><span>)
{
</span><span>case</span> IMG_FILTER_NEGATE:<span>
imagefilter(</span><span>$image</span> , IMG_FILTER_NEGATE); <span>//</span><span>将图像中所有颜色反转</span>
<span>break</span><span>;
</span><span>case</span> IMG_FILTER_GRAYSCALE:<span>
imagefilter(</span><span>$image</span> , IMG_FILTER_GRAYSCALE); <span>//</span><span>将图像转换为灰度的</span>
<span>break</span><span>;
</span><span>case</span> IMG_FILTER_EMBOSS:<span>
imagefilter(</span><span>$image</span> , IMG_FILTER_EMBOSS); <span>//</span><span>使图像浮雕化</span>
<span>break</span><span>;
</span><span>case</span> IMG_FILTER_GAUSSIAN_BLUR:<span>
imagefilter(</span><span>$image</span> , IMG_FILTER_GAUSSIAN_BLUR); <span>//</span><span>用高斯算法模糊图像</span>
<span>break</span><span>;
}
</span><span>if</span>(<span>isset</span>(<span>$_POST</span>['emb_caption'<span>]))
{
imagettftext(</span><span>$image</span> , 12 , 0 , 20 , 20 , 0 , <span>$font</span> , <span>$image_caption</span><span>);
}
imagejpeg(</span><span>$image</span> , <span>$dir</span>.'/'.<span>$_POST</span>['id'].'.jpg' , 100<span>);
</span>?>
<title>Here is your pic!</title>
<h1 id="Your-image-has-been-saved">Your image has been saved!</h1>
<img src="/static/imghw/default1.png" data-src="/inc/test.jsp?url=http%3A%2F%2Fimages.cnitblog.com%2Fi%2F72678%2F201405%2F152205020151940.png&refer=http%3A%2F%2Fwww.cnblogs.com%2Ftylerdonet%2Fp%2F3731018.html" class="lazy" id alt="php给图片加文字" >.jpg" alt="" />
<span>php
}
</span><span>else</span><span>
{
</span>?>
<title>Here is your pic!</title>
<h1 id="So-how-does-it-feel-to-be-famous">So how does it feel to be famous?</h1>
<p>Here is the picture you just uploaded to your servers:</p>
<!--<img src="/static/imghw/default1.png" data-src="/inc/test.jsp?url=http%3A%2F%2Fimages.cnitblog.com%2Fi%2F72678%2F201405%2F152205020151940.png&refer=http%3A%2F%2Fwww.cnblogs.com%2Ftylerdonet%2Fp%2F3731018.html" class="lazy" alt="" style="max-width:90%" />-->
<span>php
</span><span>if</span>(<span>$_POST</span>['submit'] == 'Upload'<span>)
{
</span><span>$imagename</span> = 'images/'.<span>$image_id</span>.'.jpg'<span>;
}
</span><span>else</span><span>
{
</span><span>$imagename</span> = 'image_effect.php?id='.<span>$image_id</span>.'&e='.<span>$_POST</span>['effect'<span>];
</span><span>if</span>(<span>isset</span>(<span>$_POST</span>['emb_caption'<span>]))
{
</span><span>$imagename</span> .= '&capt='.<span>urlencode</span>(<span>$image_caption</span><span>);
}
}
</span>?>
<img src="/static/imghw/default1.png" data-src="/inc/test.jsp?url=http%3A%2F%2Fimages.cnitblog.com%2Fi%2F72678%2F201405%2F152205020151940.png&refer=http%3A%2F%2Fwww.cnblogs.com%2Ftylerdonet%2Fp%2F3731018.html" class="lazy" style="max-width:90%" alt="">
Salin selepas log masuk
Salin selepas log masuk
| Image save as: | $image_id?> |
| Height: | echo $height;?> |
| Widht: | echo $width;?> |
| Upload date: | echo $image_date;?> |
You may apply a special effect to your image from the list of option below. Note:saving an image with any of the filters applied can be undone
php } ?>这里如果我们写成下面这样
<span>putenv</span>('GDFONTPATH='.'C:\Windows\Fonts'<span>);
</span><span>$font</span> = "arial";Salin selepas log masuk
是看不到效果的，这里顺便提一下，火狐是最佳的开发工具，怎么讲呢，看看下面的对比吧。
火狐的提示是这样的：
图片没有截完整提示是：The image “http://localhost:81/test/image_effect.php?id=31&e=-1&capt=you+are+big+bitch” cannot be displayed because it contains errors.
谷歌浏览器的显示如下：
一个未能正确显示的图片，什么信息都没有。
再来看看大IE的，如下：
也能看到错误信息，但是一大堆乱码啊！
所以说开发人员好帮手还是火狐。
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Alat panas
Notepad++7.3.1
Editor kod yang mudah digunakan dan percuma
SublimeText3 versi Cina
Versi Cina, sangat mudah digunakan
Hantar Studio 13.0.1
Persekitaran pembangunan bersepadu PHP yang berkuasa
Dreamweaver CS6
Alat pembangunan web visual
SublimeText3 versi Mac
Perisian penyuntingan kod peringkat Tuhan (SublimeText3)
Topik panas
Konfigurasi Projek CakePHP
Sep 10, 2024 pm 05:25 PM
Dalam bab ini, kita akan memahami Pembolehubah Persekitaran, Konfigurasi Umum, Konfigurasi Pangkalan Data dan Konfigurasi E-mel dalam CakePHP.
Panduan Pemasangan dan Naik Taraf PHP 8.4 untuk Ubuntu dan Debian
Dec 24, 2024 pm 04:42 PM
PHP 8.4 membawa beberapa ciri baharu, peningkatan keselamatan dan peningkatan prestasi dengan jumlah penamatan dan penyingkiran ciri yang sihat. Panduan ini menerangkan cara memasang PHP 8.4 atau naik taraf kepada PHP 8.4 pada Ubuntu, Debian, atau terbitan mereka
Tarikh dan Masa CakePHP
Sep 10, 2024 pm 05:27 PM
Untuk bekerja dengan tarikh dan masa dalam cakephp4, kami akan menggunakan kelas FrozenTime yang tersedia.
Muat naik Fail CakePHP
Sep 10, 2024 pm 05:27 PM
Untuk mengusahakan muat naik fail, kami akan menggunakan pembantu borang. Di sini, adalah contoh untuk muat naik fail.
Penghalaan CakePHP
Sep 10, 2024 pm 05:25 PM
Dalam bab ini, kita akan mempelajari topik berikut yang berkaitan dengan penghalaan ?
Bincangkan CakePHP
Sep 10, 2024 pm 05:28 PM
CakePHP ialah rangka kerja sumber terbuka untuk PHP. Ia bertujuan untuk menjadikan pembangunan, penggunaan dan penyelenggaraan aplikasi lebih mudah. CakePHP adalah berdasarkan seni bina seperti MVC yang berkuasa dan mudah difahami. Model, Pandangan dan Pengawal gu
CakePHP Bekerja dengan Pangkalan Data
Sep 10, 2024 pm 05:25 PM
Bekerja dengan pangkalan data dalam CakePHP adalah sangat mudah. Kami akan memahami operasi CRUD (Buat, Baca, Kemas Kini, Padam) dalam bab ini.
Pengesah Mencipta CakePHP
Sep 10, 2024 pm 05:26 PM
Pengesah boleh dibuat dengan menambah dua baris berikut dalam pengawal.
