Learn about encapsulating watermark functions in PHP in one minute

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Encapsulating watermark function:

Let’s create a file first, Then we first define a function, and then there are several resources that need to be written, and then give it a test by default, and then transparency, and then store space in time, and then we start further operations. The specific code is as follows:

Open the picture:

$sourceRes = open ($source) ;
var_dump ($source) ;
$waterRes=open ($water) ;

//Get the size of the picture and calculate the position

$sourceInfo=getimagesize ($source) ;
$waterInfo = getimagesize ($water) ;

Function to open the picture:

function open ($path)
{

Still defines a function, and then we need to pass a path, and then we determine whether it exists,

if (!file_exists ($path) ) {
exit('文件不存在') ;
$info=getimagesize ($path) ;
//var_dump($info) ;
switch ($info['mime']) (
  case ' image/jpeg' :
  case ' image/jpg' :
  case
  ' image/pjpeg' :
  $res=imagecreatefromjpeg ($path) ;
  break;
  case'image/png' :
  $res=imagecreatefrompng ($path) ;
  break ;
  case'image/gif' :
  $res = imagecreatefromgif ($path) ;
  break; .
  case'image/wbmp' :
  case ' image/bmp' :
  $res=imagecreatefromwbmp ($path) ;
  break;
  
}
}

//Calculate the position

switch ($position) {
  case1 :
  $x=0;
  $y-0;
  break;
  case 2 :
  $x=($sourceInfo[0] - $waterInfo[0]) / 2;
  $y=0;
  break;
  case 3 :
  $x=$sourceInfo[0] - $waterInfo[0];
  $y=O;
  break;
  caso 4 :
  $X=0;
  $y = ($sourceInfo[1] - $waterInfo[]) / 2;
  break;
  case 5 :
    $x =($sourceInfo[0] - $waterInfo[0]), / 2;
    2;
    $y = ($sourceInfo[1] - $waterInfo[1]) / 2;
    break;
    case 6: 
    $x = $sourceInfo[0] - $waterInfo[0];
    $y = ($sourceInfo[1] - $waterInfo[1]) / 2
    break;
    case 7 :
    $x-0;
    $y - $sourceInfo[1] - SwaterInfo[1];
    break;
    case 8 :
    $x=($sourceInfo[0] - $waterInfo[0]) / 2;
    $y = $sourceInfo[1] - $waterInfo[1];
    break;
    caso 9 :
    $x=$sourceInfo[0] - $waterInfo[0];
    $y = $sourceInfo[1] - $waterInfo[1];
    break;
    default :
    $x=mt_rand(0 ，$sourceInfo[0] - $waterInfo[0]) ;
    $y=mt_rand(0，$sourceInfo[1] - $waterInfo[1]) ;
    break;

//Use the value obtained by xy for use when merging two pictures

imagecopymerge () ;

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