Ereg Deprecated

Deprecated: Function ereg() is deprecated in /home/ponto098/public_html/entrar/classes/class.upload.php on line 2249

Deprecated: Function ereg_replace() is deprecated in /home/ponto098/public_html/entrar/classes/class.upload.php on line 2858

Deprecated: Function ereg() is deprecated in /home/ponto098/public_html/entrar/classes/class.upload.php on line 2249

Deprecated: Function ereg_replace() is deprecated in /home/ponto098/public_html/entrar/classes/class.upload.php on line 2858

1°

if ($this->uploaded) {
 $this->log .= '- file name OK<br />';
 preg_match('/\.([^\.]*$)/', $this->file_src_name, $extension);
 if (is_array($extension)) {
 $this->file_src_name_ext = strtolower($extension[1]);
 $this->file_src_name_body = substr($this->file_src_name, 0, ((strlen($this->file_src_name) - strlen($this->file_src_name_ext)))-1);
 } else {
 $this->file_src_name_ext = '';
 $this->file_src_name_body = $this->file_src_name;
 }
 $this->file_src_size = $file['size'];
 $mime_from_browser = $file['type'];
 }
 }

2°

if ($this->file_safe_name) { // formats the name
 $this->file_dst_name_body = str_replace(array(' ', '-'), array('_','_'), $this->file_dst_name_body) ;
 $this->file_dst_name_body = preg_replace('/[^A-Za-z0-9_]/', '', $this->file_dst_name_body) ;
 $this->log .= '- file name safe format<br />';
 }

alguém me da uma força ai..