Upload zdjęcia Ajax bez przeładowania zmiana rozmiaru zdjęcia

pytanie zadane 17 września 2018 w PHP przez Zbigniew Andrysiak Bywalec (2,470 p.)

Cześć.
Używam poniższego kodu do wgrywania zdjęć na dysk. Zmieniam nazwę, ale chciałbym również zmienić rozmiar pliku (resize - wymiary). Powiedzcie co robię nie tak.

<?php
include('configbase.php');
if(count($_FILES["file"]["name"]) > 0)
{
for($count=0; $count<count($_FILES["file"]["name"]); $count++)
 {
  $file_name = $_FILES["file"]["name"][$count];
  $tmp_name = $_FILES["file"]['tmp_name'][$count];
  $file_array = explode(".", $file_name);
  $file_extension = end($file_array);

  if(file_already_uploaded($file_name, $db2))
  {
   $file_name = $file_array[0] . '-'. rand() . '.' . $file_extension;
  }
  $location = 'C:\xampp1\htdocs\stepbystep2\img\img' . $count.'.' .$file_extension;
  if(move_uploaded_file($tmp_name, $location))
  { 
   $query = "INSERT INTO rotator (zdjecie, tekst, active) VALUES ('img".$count.'.' .$file_extension ."', '', 'TAK') ";
   $statement = $db2->prepare($query);
   $statement->execute();
   }
 }
}
            $new_width=10px;
            $new_height = 200px;
            $tmp_name = imagecreatetruecolor($new_width, $new_height);
            imagecopyresampled($tmp_name, $file_name, 0, 0, 0, 0, $new_width, $new_height);

function file_already_uploaded($file_name, $db2)
{
  $query = "SELECT * FROM rotator WHERE zdjecie = '".$file_name."'";
 $statement = $db2->prepare($query);
 $statement->execute();
 $number_of_rows = $statement->rowCount();
 if($number_of_rows > 0)
 {
  return true;
   }
 else
 {
  return false;
 }
}
?>

1 odpowiedź

odpowiedź 18 września 2018 przez Zbigniew Andrysiak Bywalec (2,470 p.)

Zrobiłem coś takiego. Dlaczego nie działa?

if(count($_FILES["file"]["name"]) > 0)
{
for($count=0; $count<count($_FILES["file"]["name"]); $count++)
 {
  $file_name = $_FILES["file"]["name"][$count];
  $tmp_name = $_FILES["file"]['tmp_name'][$count];
  $file_array = explode(".", $file_name);
  $file_extension = end($file_array);
  $source_properties = getimagesize($file_name);
  //$image_type = $source_properties[2]; 
  $image_resource_id = imagecreatefromjpeg($file_name);  
  $target_layer = fn_resize($image_resource_id,$source_properties[0],$source_properties[1]);
  imagejpeg($target_layer,$_FILES["file"]["name"] . "_thump.jpg");
  if(file_already_uploaded($file_name, $db2))
  {
   $file_name = $file_array[0] . '-'. rand() . '.' . $file_extension;
  }
  $location = 'C:\xampp1\htdocs\stepbystep2\img\img' . $count.'.' .$file_extension;
  if(move_uploaded_file($tmp_name, $location))
  { 
   $query = "INSERT INTO rotator (zdjecie, tekst, active) VALUES ('img".$count.'.' .$file_extension ."', '', 'TAK') ";
   $statement = $db2->prepare($query);
   $statement->execute();
   }
 }
}
function file_already_uploaded($file_name, $db2)
{
 $query = "SELECT * FROM rotator WHERE zdjecie = '".$file_name."'";
 $statement = $db2->prepare($query);
 $statement->execute();
 $number_of_rows = $statement->rowCount();
 if($number_of_rows > 0)
 {
  return true;
   }
 else
 {
  return false;
 }
 function fn_resize($image_resource_id,$width,$height) {
$target_width =200;
$target_height =200;
$target_layer=imagecreatetruecolor($target_width,$target_height);
imagecopyresampled($target_layer,$image_resource_id,0,0,0,0,$target_width,$target_height, $width,$height);
return $target_layer;
}
}