创建、显示来自 PHP 的图像
Creating, Displaying Images From PHP
问题：
如何让我的 blob 图像真正起作用，它可以处理的图像有大小限制吗？我将 sql 数据库设置为 longblob，以防出现问题，但所有内容仍然无法正确解析。我尝试转储变量，但得到一大堆文本，所以我不确定出了什么问题。
代码
$image = getImgFromDB();
header('Content-Type:image/jpeg');
echo $image;
code http://s10.postimg.org/wn8m7k1s8/Screen_Shot_2015_05_08_at_10_51_46_PM.jpg
研究：
- http://php.net/manual/en/function.header.php
- I need my PHP page to show my BLOB image from mysql database
- PHP display image BLOB from MySQL
- How to display an BLOB image stored in MySql database?
- http://forum.codecall.net/topic/40849-tutorial-storing-images-in-mysql-with-php-part-ii-display-your-images/
插入数据库时更新
行中的文件，由PHP和JS检查以确保它是图像类型并且在一定尺寸内。
$theImageData = file_get_contents($filedata['tmp_name']);
更新 3
Header 是 text/plain
这已经过测试，应该可以找出问题所在。
能出错的地方不多，所以我不明白为什么会出问题。
检查图像是否被读入。长度应与图像的大小相同。 base 64 将显示其余部分。
header('Content-Type:text/plain');
$filename = "pitbull3p.jpg";
$handle = fopen($filename, "r");
$image = fread($handle, filesize($filename));
$len = strlen($image);
$base64 = base64_encode($image);
echo "Length=$len\n\n" . $base64;
结果
这是我的实际结果
Length=1864
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
更新 3 结束
更新 2
将字符串分解成字节是可行的。 （不推荐）但是字符串十六进制表示不起作用。十六进制字符串表示适用于 SQL 查询（不带引号，不带引号），但不适用于回显。
您可以将字符串打包成二进制字符串。令人沮丧。
header('Content-Type:image/jpg');
$image = 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echo $image;
这也行。我将图像存储为 base64 字符串。这是万无一失的。很简单的。存储在 SQL TEXT 列中。
header('Content-Type:image/jpg');
$filename = "pitbull3p.jpg";
$handle = fopen($filename, "r");
$image = base64_encode(fread($handle, filesize($filename)));
$len = strlen($image);
echo base64_decode($image);
gzcompress 会将 base64 字符串缩小到原始二进制图像的大小。在这种情况下更少：
$image = gzcompress(base64_encode(fread($handle, filesize($filename))));
1,864 字节原始 jpg 图片
压缩前 2,488 字节 base64。
压缩后 1,833 字节。
我还注意到我没有把 header() 放在我以前的代码中。现在就在那里。
更新 2 结束
更新
我认为问题出在将图像保存到 BLOB 中。我使用 PHPmyAdmin 来保存图像。当我编写一些代码来保存图像时，我遇到了问题。
这是我终于开始工作的代码。以空 table.
开头
我使用 fread 因为它是二进制安全的。将文件数据转换为十六进制并将十六进制附加到'0x'。
重要的是 $image 查询字符串中没有单引号。
header('Content-Type:image/jpg');
$filename = "pitbull3p.jpg";
$handle = fopen($filename, "r");
$image = fread($handle, filesize($filename));
$image = '0x' . bin2hex($image);
$sql = "INSERT INTO `isl_contact`.`image` (`id`, `image`) VALUES (1,$image)";
$result = mysql_query($sql);
if(mysql_errno() > 0){echo mysql_error() . "\n$sql";}
$result = mysql_query("SELECT `image` FROM `image` WHERE `id` = 1");
$row = mysql_fetch_array($result, MYSQL_NUM);
echo $row[0];
更新结束
我也是这样做的，效果很好。
您是如何将图像放入 table 的？
当我在浏览器中查看脚本时，图像出现了。
在 LONGBLOB 中保存了一张 jpg 图像
header('Content-Type:image/jpg');
$result = mysql_query("SELECT `image` FROM `image` WHERE `id` = 1");
$row = mysql_fetch_array($result, MYSQL_NUM);
echo $row[0];
这是我的测试数据库
CREATE TABLE IF NOT EXISTS `image` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`image` longblob NOT NULL,
PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1 AUTO_INCREMENT=1 ;
INSERT INTO `image` (`id`, `image`) VALUES
(1, 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);
// Notice there are no quote marks around the Hex
也许将图片上传到服务器文件夹并只保存图片的路径。效率更高。
问题：
如何让我的 blob 图像真正起作用，它可以处理的图像有大小限制吗？我将 sql 数据库设置为 longblob，以防出现问题，但所有内容仍然无法正确解析。我尝试转储变量，但得到一大堆文本，所以我不确定出了什么问题。
代码
$image = getImgFromDB();
header('Content-Type:image/jpeg');
echo $image;
code http://s10.postimg.org/wn8m7k1s8/Screen_Shot_2015_05_08_at_10_51_46_PM.jpg
研究：
- http://php.net/manual/en/function.header.php
- I need my PHP page to show my BLOB image from mysql database
- PHP display image BLOB from MySQL
- How to display an BLOB image stored in MySql database?
- http://forum.codecall.net/topic/40849-tutorial-storing-images-in-mysql-with-php-part-ii-display-your-images/
插入数据库时更新
行中的文件，由PHP和JS检查以确保它是图像类型并且在一定尺寸内。
$theImageData = file_get_contents($filedata['tmp_name']);
更新 3
Header 是 text/plain
这已经过测试，应该可以找出问题所在。
能出错的地方不多，所以我不明白为什么会出问题。
检查图像是否被读入。长度应与图像的大小相同。 base 64 将显示其余部分。
header('Content-Type:text/plain');
$filename = "pitbull3p.jpg";
$handle = fopen($filename, "r");
$image = fread($handle, filesize($filename));
$len = strlen($image);
$base64 = base64_encode($image);
echo "Length=$len\n\n" . $base64;
结果
这是我的实际结果
Length=1864
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
更新 3 结束
更新 2
将字符串分解成字节是可行的。 （不推荐）但是字符串十六进制表示不起作用。十六进制字符串表示适用于 SQL 查询（不带引号，不带引号），但不适用于回显。
您可以将字符串打包成二进制字符串。令人沮丧。
header('Content-Type:image/jpg');
$image = 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echo $image;
这也行。我将图像存储为 base64 字符串。这是万无一失的。很简单的。存储在 SQL TEXT 列中。
header('Content-Type:image/jpg');
$filename = "pitbull3p.jpg";
$handle = fopen($filename, "r");
$image = base64_encode(fread($handle, filesize($filename)));
$len = strlen($image);
echo base64_decode($image);
gzcompress 会将 base64 字符串缩小到原始二进制图像的大小。在这种情况下更少：
$image = gzcompress(base64_encode(fread($handle, filesize($filename))));
1,864 字节原始 jpg 图片
压缩前 2,488 字节 base64。
压缩后 1,833 字节。
我还注意到我没有把 header() 放在我以前的代码中。现在就在那里。
更新 2 结束
更新
我认为问题出在将图像保存到 BLOB 中。我使用 PHPmyAdmin 来保存图像。当我编写一些代码来保存图像时，我遇到了问题。
这是我终于开始工作的代码。以空 table.
开头我使用 fread 因为它是二进制安全的。将文件数据转换为十六进制并将十六进制附加到'0x'。
重要的是 $image 查询字符串中没有单引号。
header('Content-Type:image/jpg');
$filename = "pitbull3p.jpg";
$handle = fopen($filename, "r");
$image = fread($handle, filesize($filename));
$image = '0x' . bin2hex($image);
$sql = "INSERT INTO `isl_contact`.`image` (`id`, `image`) VALUES (1,$image)";
$result = mysql_query($sql);
if(mysql_errno() > 0){echo mysql_error() . "\n$sql";}
$result = mysql_query("SELECT `image` FROM `image` WHERE `id` = 1");
$row = mysql_fetch_array($result, MYSQL_NUM);
echo $row[0];
更新结束
我也是这样做的，效果很好。
您是如何将图像放入 table 的？
当我在浏览器中查看脚本时，图像出现了。
在 LONGBLOB 中保存了一张 jpg 图像
header('Content-Type:image/jpg');
$result = mysql_query("SELECT `image` FROM `image` WHERE `id` = 1");
$row = mysql_fetch_array($result, MYSQL_NUM);
echo $row[0];
这是我的测试数据库
CREATE TABLE IF NOT EXISTS `image` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`image` longblob NOT NULL,
PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1 AUTO_INCREMENT=1 ;
INSERT INTO `image` (`id`, `image`) VALUES
(1, 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);
// Notice there are no quote marks around the Hex
也许将图片上传到服务器文件夹并只保存图片的路径。效率更高。