Databases
StackOverflow2013
Postsdbo
POcreate thumbnail for blob with php
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POcreate thumbnail for blob with php
    primarykey
    data
    text
    <p>It is very easy to create a thumbnail as a file but I can't figure out how to use the PHP image functions to create an image and store the data inside a variable witch I can use to store the data inside a database table. </p> <p>I am new to the image functions and I do not understand their working. Are they directory orientated? So I have to create something like a tmp map for the thumbnail maker and then just use file_get_content and then remove the image. </p> <p>Or can I some how store the data of the image during the process. I have no idea!</p> <p>This is how I create thumbnails if I need to save them as a file:</p> <pre><code>//found at stackoverflow function tumbmaker($updir, $img,$MaxWe=100,$MaxHe=150){ $arr_image_details = getimagesize($img); $width = $arr_image_details[0]; $height = $arr_image_details[1]; $percent = 100; if($width &gt; $MaxWe) $percent = floor(($MaxWe * 100) / $width); if(floor(($height * $percent)/100)&gt;$MaxHe) $percent = (($MaxHe * 100) / $height); if($width &gt; $height) { $newWidth=$MaxWe; $newHeight=round(($height*$percent)/100); }else{ $newWidth=round(($width*$percent)/100); $newHeight=$MaxHe; } if ($arr_image_details[2] == 1) { $imgt = "ImageGIF"; $imgcreatefrom = "ImageCreateFromGIF"; } if ($arr_image_details[2] == 2) { $imgt = "ImageJPEG"; $imgcreatefrom = "ImageCreateFromJPEG"; } if ($arr_image_details[2] == 3) { $imgt = "ImagePNG"; $imgcreatefrom = "ImageCreateFromPNG"; } if ($imgt) { $old_image = $imgcreatefrom($img); $new_image = imagecreatetruecolor($newWidth, $newHeight); imagecopyresized($new_image, $old_image, 0, 0, 0, 0, $newWidth, $newHeight, $width, $height); $imgt($new_image, $updir."_t.jpg"); return; } } </code></pre> <p>I did it with this code:</p> <pre><code>function tumbmaker($img_source,$MaxWe=100,$MaxHe=150){ $arr_image_details = getimagesize($img_source); $width = $arr_image_details[0]; $height = $arr_image_details[1]; $percent = 100; if($width &gt; $MaxWe) $percent = floor(($MaxWe * 100) / $width); if(floor(($height * $percent)/100)&gt;$MaxHe) $percent = (($MaxHe * 100) / $height); if($width &gt; $height) { $newWidth=$MaxWe; $newHeight=round(($height*$percent)/100); }else{ $newWidth=round(($width*$percent)/100); $newHeight=$MaxHe; } if ($arr_image_details[2] == 1) { $imgt = "ImageGIF"; $imgcreatefrom = "ImageCreateFromGIF"; } if ($arr_image_details[2] == 2) { $imgt = "ImageJPEG"; $imgcreatefrom = "ImageCreateFromJPEG"; } if ($arr_image_details[2] == 3) { $imgt = "ImagePNG"; $imgcreatefrom = "ImageCreateFromPNG"; } if ($imgt) { $old_image = $imgcreatefrom($img_source); $new_image = imagecreatetruecolor($newWidth, $newHeight); imagecopyresized($new_image, $old_image, 0, 0, 0, 0, $newWidth, $newHeight, $width, $height); $imgt($new_image, $updir."_t.jpg"); ob_start(); $imgt($new_image); $imgData = ob_get_clean(); return $imgData; } } </code></pre> <p>Read the answer for more info</p>
    singulars
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. USbotenvouwer
    1. USbotenvouwer
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    1. VO
      singulars
      1. POcreate thumbnail for blob with php
      1. This table or related slice is empty.
      1. VTUpMod
    1. This table or related slice is empty.
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload