php错误允许1073741824字节的内存大小耗尽

我有这个代码段来上传一个文件。当我上传像（300MB）这样的大文件时，我会遇到这个错误。低于20 MB的文件可以正常工作。

Fatal error: Allowed memory size of 1073741824 bytes exhausted (tried to allocate 813695000 bytes) in C:'xampp'htdocs'PHP'processor.php on line 219

注意：我已经做了很多SO和谷歌搜索，但没能解决这个问题。

我找到的原因：原因-file_get_contents()将整个字符串的数据提取到变量中。该变量存储在主机内存中。当字符串大于PHP进程专用的大小时

$data = file_get_contents( $path );
    //echo $data;
    $data = mysqli_real_escape_string( $con, $data );
    $query_insert = "INSERT INTO Upload(Name,Type,Size,Content) VALUES('Tour Photo','jpg',234, '$data')";
    $result_insert = mysqli_query( $con, $query_insert ) or die ("<hr>Couldn't execute INSERT query: ". mysqli_error($con));
    echo "<h4>New sport added to the database</h4>";

更新了@RedPoppy的代码

        $fo = fopen ( $path, 'r' );
        if( is_readable($path) ){
            echo "*** Uploaded file is readable ***<br><br>";
        }
        $data = fread ( $fo, filesize($path) ); //read entire file
        $data = mysqli_real_escape_string ( $con, $data );
        fclose( $fo );