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dbase_add_record> <time
Last updated: Sat, 17 Jul 2004

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XVIII. dBase Functions

Introduction

These functions allow you to access records stored in dBase-format (dbf) databases.

There is no support for indexes or memo fields. There is no support for locking, too. Two concurrent webserver processes modifying the same dBase file will very likely ruin your database.

dBase files are simple sequential files of fixed length records. Records are appended to the end of the file and delete records are kept until you call dbase_pack().

We recommend that you do not use dBase files as your production database. Choose any real SQL server instead; MySQL or Postgres are common choices with PHP. dBase support is here to allow you to import and export data to and from your web database, because the file format is commonly understood by Windows spreadsheets and organizers.

Installation

In order to enable the bundled dbase library and to use these functions, you must compile PHP with the --enable-dbase option.

Runtime Configuration

This extension has no configuration directives defined in php.ini.

Resource Types

This extension has no resource types defined.

Predefined Constants

This extension has no constants defined.

İçindekiler
dbase_add_record -- Add a record to a dBase database
dbase_close -- Close a dBase database
dbase_create -- Creates a dBase database
dbase_delete_record -- Deletes a record from a dBase database
dbase_get_header_info -- Get the header info of a dBase database
dbase_get_record_with_names --  Gets a record from a dBase database as an associative array
dbase_get_record -- Gets a record from a dBase database
dbase_numfields --  Find out how many fields are in a dBase database
dbase_numrecords --  Find out how many records are in a dBase database
dbase_open -- Opens a dBase database
dbase_pack -- Packs a dBase database
dbase_replace_record -- Replace a record in a dBase database


dbase_add_record> <time
Last updated: Sat, 17 Jul 2004
 
add a note add a note User Contributed Notes
dBase Functions
kuthullu at webmails dot com
09-Apr-2008 07:40
For all those of you who wants to DBF->SQL, here's half of a hour worth of work.
It's pretty simple, outputs a CREATE TABLE and lots of INSERTs.
The output is HTML, as I use w$ndows here at work and prefer to just see results in opera.
You SHOULD verify the created data, add some CREATE KEYs, NOT NULLs or whatever you like.

<?php
$file_name
= "mfiscal/dados22/APISS110.D00";
$table = "dbf_apiss";

$dbf = @dbase_open($file_name, 0) or die("Error opening $file_name");
$fields = dbase_get_header_info($dbf);

/* Just show a table with header information */
echo "<table cellspacing=0><tr><th>Name</th><th>Type</th>
<th>Length</th><th>Precision</th><th>Format</th><th>Offset</th></tr>"
;
foreach(
$fields as $field)
{
    echo
"<tr>
        <td>{$field['name']}</td>
        <td>{$field['type']}</td>
        <td>{$field['length']}</td>
        <td>{$field['precision']}</td>
        <td>{$field['format']}</td>
        <td>{$field['offset']}</td>
        </tr>"
;
}
echo
"</table><br><br>";

/* Here begins the SQL code part */
echo "CREATE TABLE $table (<BR>";
$x = 0;
$fields_num = 0;
foreach(
$fields as $field)
{
    if(
$x++ != 0)
        echo
",<BR>";
    switch(
$field['type'])
    {
        case
'character' : $type = 'CHAR'; $length = $field['length'] > 1 ? "({$field['length']})" : ""; break;
        case
'number' : $type = 'NUMERIC'; $length = "({$field['length']}" . ($field['precision'] > 0 ? ", {$field['precision']})": ")");
        break;
//        case '' : $type = ''; break;
   
}
   
$fields_num++;
    echo
"&nbsp;&nbsp;&nbsp;{$field['name']} $type$length";
}
echo
");<BR><BR>BEGIN;<BR>";
$records = @dbase_numrecords($dbf) or die("Error reading DBF's number of fields");
for(
$x = 1; $x <= $records; $x++)
{
   
$record = dbase_get_record($dbf, $x);
    echo
"INSERT INTO $table VALUES (";
   
$f = 0;
    foreach(
$record as $field)
    {
        if(
$f != 0) echo ", ";
        if(
strcmp(str_repeat(' ', $fields[$f]['length']), $field) != 0)
        {
            if(
$fields[$f]['type'] == 'character') echo "'";
            echo
$field;
            if(
$fields[$f]['type'] == 'character') echo "'";
        }
        else
            echo
"NULL";
        if(++
$f >= $fields_num) break;
    }
    echo
");<BR>";
}
echo
"COMMIT;";
?>
bi.idan AT gmail.com
16-Apr-2007 04:40
I know lots of you dosent really use dbase, but i've builded a class to help the one how dose.
(sorry for bad english)

- dbase.php

<?php

set_time_limit
(0);
// site_path defined by parent
require_once (SITE_PATH. '/server/php/libs/dbase/handler.php');

/* DBase (dbf)
 *    manage dbf files, exports and search functionality
 *    with buildin optimizers for fast performance
 */

class DBase
{
    private
$handler = false;
    private
$searchopt = array (); // Search optimizer
   
   
private function unload ()
    {
        if (
$this-> handler !== false)
            unset (
$this-> handler);
    }
   
    public function
__construct ($file = false)
    {
        if (
$file !== false)
           
$this-> load ($file);
    }
   
    public function
__destruct ()
    {
       
$this-> unload ();
    }
   
    public function
load ($file)
    {
       
$resource = dbase_open ($file, 0);
       
$this-> handler = new DBase_Handler ($resource);
       
        return
$this-> handler;
    }
   
   
/* Search
     *    search for string inside header
     *    returns record number
     *        false returned if not found or error occurred
     *    limit_results gets int or false, limit_results equels one will limit the
     *        search results for one result only, false for no limit
     */
   
public function search ($headerText, $string, $limit_results = false, $handler = false)
    {
        if (
$handler === false)
           
$handler = $this-> handler;
           
        if (
$this-> searchopt [$headerText][$string])
            return
$this-> searchopt [$headerText][$string];
        else
        {
           
$size = $handler-> getSize ();
            if ( (
$headerNumber = $handler-> getHeaderNumber ($headerText) ) !== false)
            {
               
$results = array ();
                for (
$i = 1; $i < $size; $i++)
                {
                   
$record = $handler-> getRecord ($i, false); // Disabled optimizer to prevent memory overflow
                   
if (trim ($record [$headerNumber]) == $string)
                    {
                       
$results[] = $i;
                       
                        if ( (
$limit_results !== false) && (sizeof ($results) == $limit_results) )
                            break;
                    }
                }
               
                if (
sizeof ($results) > 0)
                {
                   
$this-> searchopt [$headerText][$string] = $results;
                    return
$this-> search ($headerText, $string, $handler);
                }
               
                return
false;
            } else
                return
false;
        }
    }
}

?>

- dbase_handler.php

<?php

/* DBase Handler (dbf)
 *    handles dbase resource
 */

class DBase_Handler
{
    private
$resource;
    private
$size; // Records Count
   
private $header = array ();
    private
$dataopt = array (); // Data optimizer
   
   
private function setHeader ()
    {
       
$this-> header = dbase_get_header_info ($this-> resource);
    }
   
    public function
__construct ($resource)
    {
       
$this-> resource = $resource;
       
$this-> setHeader ();
       
$this-> size = dbase_numrecords ($this-> resource);
    }
   
    public function
__destruct ()
    {
       
dbase_close ($this-> resource);
    }
   
    public function
getRecord ($record_number, $dataopt = true)
    {
        if (
$record_number > $this-> size)
            return
false;
        else
        {
            if (
$this-> dataopt [$record_number])
                return
$this-> dataopt [$record_number];
            else
            {
               
$record = dbase_get_record ($this-> resource, $record_number);
                if (
$dataopt === true) // Data saving optimizer
               
{
                   
$this-> dataopt [$record_number] = $record;
                    return
$this-> getRecord ($record_number);
                } else
                    return
$record;
            }
        }
    }
   
    public function
getHeaderNumber ($headerText)
    {
        foreach (
$this-> header as $index => $header)
        {
            if (
$header ['name'] == $headerText)
            {
                return
$index;
                break;
            }
        }
       
        return
false;
    }
   
    public function
getHeader ($headerNumber)
    {
        if (
$headerNumber <= sizeof ($this-> header))
            return
$this-> header [$headerNumber];
        else
            return
false;
    }
   
    public function
getSize ()
    {
        return
$this-> size;
    }
}

?>
Hadi Rusiah / deegos at yahoo dot com
08-May-2004 10:33
If you are using PHP < 5, you can use this function to retrieve dbf header

<?
function get_dbf_header($dbfname) {
   $fdbf = fopen($dbfname,'r');

   $dbfhdrarr = array();
   $buff32 = array();
   $i = 1;
   $goon = true;

   while ($goon) {
      if (!feof($fdbf)) {
         $buff32 = fread($fdbf,32);
         if ($i > 1) {
            if (substr($buff32,0,1) == chr(13)) {
               $goon = false;
            } else {
               $pos = strpos(substr($buff32,0,10),chr(0));
               $pos = ($pos == 0?10:$pos);

               $fieldname = substr($buff32,0,$pos);
               $fieldtype = substr($buff32,11,1);
               $fieldlen = ord(substr($buff32,16,1));
               $fielddec = ord(substr($buff32,17,1));

array_push($dbfhdrarr, array($fieldname,$fieldtype,$fieldlen,$fielddec));

            }
         }
         $i++;
      } else {
         $goon = false;
      }
   }

   fclose($fdbf);
   return($dbfhdrarr);
}

$arr = get_dbf_header('/data/file.dbf');
print_r($arr);
?>

dbase_add_record> <time
Last updated: Sat, 17 Jul 2004
 
 
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