php how to upload file code example

Example 1: basic code for file upload in php

//This is the minimal code for an image upload for first time learners
//html portion
<!DOCTYPE html>
<html>
<head>
	<title>ImageUpload</title>
</head>
<body>
	<form action="upload.php" method="post" enctype="multipart/form-data">
		<label>Username</label>
		<input type="text" name="username">
		<br>
		<label>UploadImage</label>
		<input type="file" name='myfile'>
		<br/>
		<input type="submit" value="upload">
	</form>
</body>
</html>
  
 //php portion
  <?php
	$user=$_POST['username'];
	$image=$_FILES['myfile'];
	echo "Hello $user <br/>";
	echo "File Name<b>::</b> ".$image['name'];

	move_uploaded_file($image['tmp_name'],"photos/".$image['name']);
	//here the "photos" folder is in same folder as the upload.php, 
	//otherwise complete url has to be mentioned
	?>

Example 2: php upload

// To change: FILENAME, array with allowed extensions, Max Filesite, Filepath
if(upload("FILENAME", array("jpeg","jpg","png"), 209715, "C:/xampp/htdocs/")){
        echo "Success";
    }


function upload($f_name, $f_ext_allowed, $f_maxsize, $f_path){

      $f_name_2 = $_FILES[$f_name]['name'];
      $f_size  =  $_FILES[$f_name]['size'];
      $f_tmp   =  $_FILES[$f_name]['tmp_name'];
      $f_error =  $_FILES[$f_name]['error'];
      $f_ext   = strtolower(end(explode('.',$f_name_2)));
      $f_rename = $_SESSION['uid'] . "." . $f_ext;

        if($f_error == 0 && in_array($f_ext, $f_ext_allowed) 
        && $f_size < $f_maxsize && mb_strlen($f_name_2, "UTF-8") < 225 
        && preg_match("`^[-0-9A-Z_\.]+$`i", $f_name_2)){
            if(move_uploaded_file($f_tmp, $f_path . $f_name_2){
                return true;
            }else{
                return false;
            }
        }else{
            return false;
        }
}

Example 3: how to upload image in php

<!DOCTYPE html><html><body><form action="upload.php" method="post"
enctype="multipart/form-data">    Select image to upload:    <input type="file" name="fileToUpload" id="fileToUpload">    <input type="submit" value="Upload Image" name="submit">
</form></body></html>

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