php ob_start() implements image storage into variable program_PHP tutorial

After using the php GD library to process the image, you can only use imagejpeg() to output or write the image to a file. In many cases, there is no need to do this. For example, if you want to save the image into the database, you need to write the image into a variable and save it with ob_start( ) Enable cache ob_get_contents() to get the cache and write the image to the variable

The code is as follows

代码如下

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$imgPath ="图片地址" ; //获得图片信息 $imgPath 可以为远程地址 list( $srcWidth, $srcHeight, $type ) = getimagesize( $imgPath ); ... switch( $type ) { case 1: $imgCreate = 'ImageCreateFromGIF'; break; case 2: $imgCreate = 'ImageCreateFromJPEG'; break; case 3: $imgCreate = 'ImageCreateFromPNG'; break; default: return false; } $orig = $imgCreate( $imgPath ); ... //开启缓存 ob_start(); //生成图片 switch ($type) { case 1: imagegif($orig); break; case 2: imagejpeg($orig); break; // best quality case 3: imagepng($orig); break; // no compression default: echo ''; break; } //将图片存入变量 $imageCode = ob_get_contents(); ob_end_clean();

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$imgPath ="image address" ;
//Get image information $imgPath can be a remote address

list( $srcWidth, $srcHeight, $type ) = getimagesize( $imgPath );
...
switch( $type ) {
case 1: $imgCreate = 'ImageCreateFromGIF'; break;
case 2: $imgCreate = 'ImageCreateFromJPEG'; break;
case 3: $imgCreate = 'ImageCreateFromPNG'; break;
default: return false;
}

$orig = $imgCreate( $imgPath );
...
//Enable caching
ob_start(); //Generate pictures
switch ($type)
{
case 1: imagegif($orig); break;
case 2: imagejpeg($orig); break; // best quality
case 3: imagepng($orig); break; // no compression
default: echo ''; break;
} //Save the image into a variable
$imageCode = ob_get_contents(); ob_end_clean(); I don’t recommend saving the image in a variable. This would be a waste of resources. It’s also fun to test here.

http://www.bkjia.com/PHPjc/629003.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/629003.htmlTechArticleAfter using the php GD library to process the image, you can only use imagejpeg() to output or write the image to a file. Many times There is no need to do this. For example, if you want to save the image into the database, you need to write the image...