A fastest way to convert the image into a smaller size then save it is to use the PHP function, exif_thumbnail. However, to generate thumbnails, you can use the script below. It’s more of a utility script though but it’s simple to moderate it for use.
<?PHP
set_time_limit(0); //use this to make sure the script doesn't time out on large number of images.
//error_reporting(E_NONE); //use this to disable errors in a production script
function getmicrotime() {
$temparray=split(" ",microtime());
$returntime=$temparray[0]+$temparray[1];
return $returntime;
}
//lets make it slightly proper HTML. not valid, but can be changed quickly to be
echo "<html>
<head><title>Processing...</title></head>
<body>";
$maindir = "." ; //change this to what ever directory needs scanning
$mydir = opendir($maindir) ;
$starttime=getmicrotime();
$i = 0; //set the count of images processed to 0
while($fn = readdir($mydir)) //scan through the whole directory
{//open while
$startimagetime = getmicrotime();
$ext = strtolower(substr($fn,strlen($fn)-3)); //get the extension of an image
if ($ext == "jpg") {
$i++; //increase the number of images processed
echo $fn ." is being processed....<br>";
flush(); //needed to display each image progress
$image = exif_thumbnail($fn, $width, $height, $type);
if ($image!==false) {
//if there is a good enough thumbnail to use, we have it here.
//extract it and put it in the file, call it [original image name].thumb.jpg
$handle = fopen ($fn.".thumb.jpg", 'a');
//write the thumbnail image
fwrite($handle, $image);
} else {
// no thumbnail available, handle the error here
echo "No thumbnail available for file ".$fn."<br>";
}
}
}
closedir($mydir);
$endtime=getmicrotime();
echo "<br>All Images have been processed, script is finshed.<br>Total processing time: ";
print $endtime-$starttime;
echo "<br> Images processed: " .$i;
echo "</body>";
echo "</html>"
?>
set_time_limit(0); //use this to make sure the script doesn't time out on large number of images.
//error_reporting(E_NONE); //use this to disable errors in a production script
function getmicrotime() {
$temparray=split(" ",microtime());
$returntime=$temparray[0]+$temparray[1];
return $returntime;
}
//lets make it slightly proper HTML. not valid, but can be changed quickly to be
echo "<html>
<head><title>Processing...</title></head>
<body>";
$maindir = "." ; //change this to what ever directory needs scanning
$mydir = opendir($maindir) ;
$starttime=getmicrotime();
$i = 0; //set the count of images processed to 0
while($fn = readdir($mydir)) //scan through the whole directory
{//open while
$startimagetime = getmicrotime();
$ext = strtolower(substr($fn,strlen($fn)-3)); //get the extension of an image
if ($ext == "jpg") {
$i++; //increase the number of images processed
echo $fn ." is being processed....<br>";
flush(); //needed to display each image progress
$image = exif_thumbnail($fn, $width, $height, $type);
if ($image!==false) {
//if there is a good enough thumbnail to use, we have it here.
//extract it and put it in the file, call it [original image name].thumb.jpg
$handle = fopen ($fn.".thumb.jpg", 'a');
//write the thumbnail image
fwrite($handle, $image);
} else {
// no thumbnail available, handle the error here
echo "No thumbnail available for file ".$fn."<br>";
}
}
}
closedir($mydir);
$endtime=getmicrotime();
echo "<br>All Images have been processed, script is finshed.<br>Total processing time: ";
print $endtime-$starttime;
echo "<br> Images processed: " .$i;
echo "</body>";
echo "</html>"
?>
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