getimagesize

Php generates a thumbnail code. For more information, see. the transfer process is relatively long because the image data volume is large, you often want to display a thumbnail of an image. although you can scale the image at will by specifying the

Although you can resize a picture arbitrarily by specifying the width and height of the image in HTML, this method does not reduce the number of pixels in the image. The size of the graphics file does not change, and of course it does not speed up

Multiple examples of detecting the size of uploaded images using phpgtimagesize Function CheckImageSize ($ ImageFileName, $ LimitSize) { $ Size = GetImageSize ($ ImageFileName ); If ($ size [0]> $ LimitSize [0

I used Jcrop to get x, y coordinates, width, height, passed to uphoto.php processing, now everything is normal, but if the front-end user chooses the picture width is too large (I use CSS style control user selected picture maximum width is 680px),

Although the width and height of an image can be specified in HTML to scale the image at will, this method does not reduce the number of pixels of the image. The size of the image file has not changed, and of course the image download speed will not

Although you can scale a picture arbitrarily by specifying the width and height of the picture in HTML, this method does not reduce the number of pixels in the picture. The size of the graphics file has not changed, of course, will not speed up the

Php generates a thumbnail. although you can specify the image width and height in HTML to scale the image at will, this method does not reduce the number of pixels of the image. The size of the image file has not changed, and of course the image

Php obtains the image size (width and height ). This article mainly describes the function of PHP to obtain the image size (width, height), that is, the getimagesize () function. Syntax: arraygetimagesize (stringfilename [, arrayimageinfo]) function:

Php generates a thumbnail code. For more information, see. the transfer process is relatively long because the image data volume is large, you often want to display a thumbnail of an image. although you can scale the image at will by specifying the

The generation of automatic miniature graphsBecause of the large amount of data in the picture, the transfer process is relatively long, so when users browse the picture, often want to firstDisplays a thumbnail of a picture.Although you can scale

There are many ways to add watermarks to images in php. These functions are based on the GD library in php. If you do not have an account, you cannot use the watermark function. The imagecopymerge () function is used to copy and merge part of an

An image size class that supports JPG, GIF, and PNG 'I have released this source code into the public domain. You may use it'With no strings attached.'Just call getimagesize with a string containing the filename, and'It will return a user

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Obtain the actual size of the JPG file bask Compile it into a component and use it. PNG is also supported. 'I have released this source code into the public domain. You may use it'With no strings attached.'Just call getimagesize with a string

=================ImageTool.class.php=================PHPclassimagetool{Private $imagePath;//Picture Path Private $outputDir;//output Folder Private $memoryImg;//Memory Image Public function__construct ($imagePath,$outputDir=NULL) {

Image watermark in PHP There are many ways to achieve, he these features are based on the GD library in PHP, if there is no opening of the GD library is not allowed to use the watermark function. The Imagecopymerge () function is used to copy and

This article mainly explains PHP to obtain the image size (width, height) function, namely the getimagesize () function. Syntax: array getimagesize (string filename [, array &imageinfo]) Function: the getimagesize () function will determine any GIF,

Add watermarks to PHPimagecopy () and imagecopymerge () images. There are many ways to add watermarks to images in php. these functions are based on the GD Library in php. if you do not have an account, you cannot use the watermark function. There

In our daily development, we often need to use to determine whether the image exists, the presence of the display, does not exist then the default picture is displayed, then we use the judgment of what? Today we will look at a few common methods:1.

The realization of watermark function is mainly depend on these function function operation 1.imagecreatefromjpeg//Open JPG picture 2.imagecreatefromgif//Open GIF picture3.imagecreatefrompng//Open PNG picture4.imagecreatefromwbmp//Open wbmp picture