dBase
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dBase 函数

范例

Many examples in this reference require a dBase database. We will use /tmp/test.dbf that will be created in the example of dbase_create().

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dBase
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PHP手册 - N: dBase 函数

用户评论:

bi.idan [at] gmail.com (12-Feb-2009 03:16)

some of you contacted me about memo fields and my script, so i'll just post my answers on the common question here.

(note: this is not an adv for any program, only what i used for myself, and it's free)

so, there are 2 options if you want to create/read memo fields:

1. use a library for java/c++/c# to build a bridge between php and dbf file. i've used dbf2java. althougth it's not near complete as my other option, it's a good start. (http://code.google.com/p/dbf2java-library/)

2. use an external program with pipes to grab the output. i used cdbflite, (http://www.whitetown.com/cdbflite/). it's free, and pretty much gives you everything you need to handle those dbf files. i'm not sure about big databases and it seems you need to register/buy it, but it's again, a start.

hope it helps some of you who needs to handle those database files,

Good luck,
idan

kuthullu at webmails dot com (09-Apr-2008 03:40)

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 (17-Apr-2007 12:40)

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 06:33)

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);
?>