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php给图片加文字
php
博客
图片
文字
论坛
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="">
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| 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="">
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| 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";Nach dem Login kopieren
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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CakePHP-Projektkonfiguration
Sep 10, 2024 pm 05:25 PM
In diesem Kapitel werden wir die Umgebungsvariablen, die allgemeine Konfiguration, die Datenbankkonfiguration und die E-Mail-Konfiguration in CakePHP verstehen.
PHP 8.4 Installations- und Upgrade-Anleitung für Ubuntu und Debian
Dec 24, 2024 pm 04:42 PM
PHP 8.4 bringt mehrere neue Funktionen, Sicherheitsverbesserungen und Leistungsverbesserungen mit einer beträchtlichen Menge an veralteten und entfernten Funktionen. In dieser Anleitung wird erklärt, wie Sie PHP 8.4 installieren oder auf PHP 8.4 auf Ubuntu, Debian oder deren Derivaten aktualisieren. Obwohl es möglich ist, PHP aus dem Quellcode zu kompilieren, ist die Installation aus einem APT-Repository wie unten erläutert oft schneller und sicherer, da diese Repositorys in Zukunft die neuesten Fehlerbehebungen und Sicherheitsupdates bereitstellen.
CakePHP Datum und Uhrzeit
Sep 10, 2024 pm 05:27 PM
Um in cakephp4 mit Datum und Uhrzeit zu arbeiten, verwenden wir die verfügbare FrozenTime-Klasse.
CakePHP-Datei hochladen
Sep 10, 2024 pm 05:27 PM
Um am Datei-Upload zu arbeiten, verwenden wir den Formular-Helfer. Hier ist ein Beispiel für den Datei-Upload.
CakePHP-Routing
Sep 10, 2024 pm 05:25 PM
In diesem Kapitel lernen wir die folgenden Themen im Zusammenhang mit dem Routing kennen.
Besprechen Sie CakePHP
Sep 10, 2024 pm 05:28 PM
CakePHP ist ein Open-Source-Framework für PHP. Es soll die Entwicklung, Bereitstellung und Wartung von Anwendungen erheblich vereinfachen. CakePHP basiert auf einer MVC-ähnlichen Architektur, die sowohl leistungsstark als auch leicht zu verstehen ist. Modelle, Ansichten und Controller gu
So richten Sie Visual Studio-Code (VS-Code) für die PHP-Entwicklung ein
Dec 20, 2024 am 11:31 AM
Visual Studio Code, auch bekannt als VS Code, ist ein kostenloser Quellcode-Editor – oder eine integrierte Entwicklungsumgebung (IDE) –, die für alle gängigen Betriebssysteme verfügbar ist. Mit einer großen Sammlung von Erweiterungen für viele Programmiersprachen kann VS Code c
CakePHP erstellt Validatoren
Sep 10, 2024 pm 05:26 PM
Der Validator kann durch Hinzufügen der folgenden zwei Zeilen im Controller erstellt werden.
