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php给图片加文字

Jun 06, 2016 pm 07:46 PM
phpブログ写真文字フォーラム

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/imghwm/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/imghwm/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/imghwm/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="">
    
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

Filter:
php echo '; if(isset($_POST['emb_caption'])) { echo ' checked="checked"'; } echo ' />Embed caption in image?'; ?>

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/imghwm/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/imghwm/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/imghwm/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="">
    
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

Filter:
php echo '; if(isset($_POST['emb_caption'])) { echo ' checked="checked"'; } echo ' />Embed caption in image?'; ?>

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";

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:

php给图片加文字

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:

php给图片加文字

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:

php给图片加文字

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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Undresser.AI Undress

リアルなヌード写真を作成する AI 搭載アプリ

AI Clothes Remover

AI Clothes Remover

写真から衣服を削除するオンライン AI ツール。

Undress AI Tool

Undress AI Tool

脱衣画像を無料で

Clothoff.io

Clothoff.io

AI衣類リムーバー

Video Face Swap

Video Face Swap

完全無料の AI 顔交換ツールを使用して、あらゆるビデオの顔を簡単に交換できます。

ホットツール

VSCode Windows 64 ビットのダウンロード

VSCode Windows 64 ビットのダウンロード

Microsoft によって発売された無料で強力な IDE エディター

MinGW - Minimalist GNU for Windows

MinGW - Minimalist GNU for Windows

このプロジェクトは osdn.net/projects/mingw に移行中です。引き続きそこでフォローしていただけます。 MinGW: GNU Compiler Collection (GCC) のネイティブ Windows ポートであり、ネイティブ Windows アプリケーションを構築するための自由に配布可能なインポート ライブラリとヘッダー ファイルであり、C99 機能をサポートする MSVC ランタイムの拡張機能が含まれています。すべての MinGW ソフトウェアは 64 ビット Windows プラットフォームで実行できます。

EditPlus 中国語クラック版

EditPlus 中国語クラック版

サイズが小さく、構文の強調表示、コード プロンプト機能はサポートされていません

SAP NetWeaver Server Adapter for Eclipse

SAP NetWeaver Server Adapter for Eclipse

Eclipse を SAP NetWeaver アプリケーション サーバーと統合します。

Dreamweaver Mac版

Dreamweaver Mac版

ビジュアル Web 開発ツール