用于Codeigniter的Csvreader库不返回所有假定的数据结果

我正在使用我刚刚复制的Csvreader。起初，对于少于10000行的记录，它工作得很好，但超过10000行的记录，似乎返回的数据少于应该返回的数据。请帮忙，因为数据很重要。下面是代码。

请帮我解决这个代码的问题。

class Csvreader {
var $fields;            /** columns names retrieved after parsing */ 
var $separator = ';';    /** separator used to explode each line */
var $enclosure = '"';    /** enclosure used to decorate each field */
var $max_row_size = 20000;    /** maximum row size to be used for decoding */
function parse_file($p_Filepath) {
    $file = fopen($p_Filepath, 'r');
    $this->fields = fgetcsv($file, $this->max_row_size, $this->separator, $this->enclosure);
    $keys_values = explode(',',$this->fields[0]);
    $data_keys = array("column 1", "column 2", "column 3"); /// just improvised
    $content    =   array();
    $keys   =   $data_keys;
    $i  =   1;
    while( ($row = fgetcsv($file, $this->max_row_size, $this->separator, $this->enclosure)) != false ) {            
        if( $row != null ) { // skip empty lines
            $values =   explode(',',$row[0]);
            if(count($keys) == count($values)){
                $arr    =   array();
                $new_values =   array();
                $new_values =   $this->escape_string($values);
                for($j=0;$j<count($keys);$j++){
                    if($keys[$j] != ""){
                        $arr[$keys[$j]] =   $new_values[$j];
                    }
                }
                $content[$i]=   $arr;
                $i++;
            }
        }
    }
    fclose($file);
    return $content;
    }
}
function escape_string($data){
    $result =   array();
    foreach($data as $row){
        $result[]   =   str_replace('"', '',$row);
    }
    return $result;
}   
}

谢谢你:-)