PHP Classes

File: adodb/drivers/adodb-pdo_mysql.inc.php

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File: adodb/drivers/adodb-pdo_mysql.inc.php
Role: Auxiliary script
Content type: text/plain
Description: Auxiliary script
Class: PHP MySQL JSON Manager
Build and Execute SQL queries with results in JSON
Author: By
Last change:
Date: 8 years ago
Size: 5,122 bytes
 

Contents

Class file image Download
<?php


/*
V5.18 3 Sep 2012 (c) 2000-2012 John Lim (jlim#natsoft.com). All rights reserved.
  Released under both BSD license and Lesser GPL library license.
  Whenever there is any discrepancy between the two licenses,
  the BSD license will take precedence.
  Set tabs to 8.
 
*/

class ADODB_pdo_mysql extends ADODB_pdo {
    var
$metaTablesSQL = "SHOW TABLES";
    var
$metaColumnsSQL = "SHOW COLUMNS FROM `%s`";
    var
$sysDate = 'CURDATE()';
    var
$sysTimeStamp = 'NOW()';
    var
$hasGenID = true;
    var
$_genIDSQL = "update %s set id=LAST_INSERT_ID(id+1);";
    var
$_dropSeqSQL = "drop table %s";
    var
$fmtTimeStamp = "'Y-m-d, H:i:s'";
    var
$nameQuote = '`';

    function
_init($parentDriver)
    {
   
       
$parentDriver->hasTransactions = false;
       
#$parentDriver->_bindInputArray = false;
       
$parentDriver->hasInsertID = true;
       
$parentDriver->_connectionID->setAttribute(PDO::MYSQL_ATTR_USE_BUFFERED_QUERY,true);
    }
   
       
// dayFraction is a day in floating point
   
function OffsetDate($dayFraction,$date=false)
    {
        if (!
$date) $date = $this->sysDate;
       
       
$fraction = $dayFraction * 24 * 3600;
        return
$date . ' + INTERVAL ' . $fraction.' SECOND';
       
// return "from_unixtime(unix_timestamp($date)+$fraction)";
   
}
   
    function
Concat()
    {
       
$s = "";
       
$arr = func_get_args();

       
// suggestion by andrew005#mnogo.ru
       
$s = implode(',',$arr);
        if (
strlen($s) > 0) return "CONCAT($s)"; return '';
    }
   
    function
ServerInfo()
    {
       
$arr['description'] = ADOConnection::GetOne("select version()");
       
$arr['version'] = ADOConnection::_findvers($arr['description']);
        return
$arr;
    }
   
    function
MetaTables($ttype=false,$showSchema=false,$mask=false)
    {
       
$save = $this->metaTablesSQL;
        if (
$showSchema && is_string($showSchema)) {
           
$this->metaTablesSQL .= " from $showSchema";
        }
       
        if (
$mask) {
           
$mask = $this->qstr($mask);
           
$this->metaTablesSQL .= " like $mask";
        }
       
$ret = ADOConnection::MetaTables($ttype,$showSchema);
       
       
$this->metaTablesSQL = $save;
        return
$ret;
    }
   
    function
SetTransactionMode( $transaction_mode )
    {
       
$this->_transmode = $transaction_mode;
        if (empty(
$transaction_mode)) {
           
$this->Execute('SET TRANSACTION ISOLATION LEVEL REPEATABLE READ');
            return;
        }
        if (!
stristr($transaction_mode,'isolation')) $transaction_mode = 'ISOLATION LEVEL '.$transaction_mode;
       
$this->Execute("SET SESSION TRANSACTION ".$transaction_mode);
    }
   
     function
MetaColumns($table,$normalize=true)
    {
       
$this->_findschema($table,$schema);
        if (
$schema) {
           
$dbName = $this->database;
           
$this->SelectDB($schema);
        }
        global
$ADODB_FETCH_MODE;
       
$save = $ADODB_FETCH_MODE;
       
$ADODB_FETCH_MODE = ADODB_FETCH_NUM;
       
        if (
$this->fetchMode !== false) $savem = $this->SetFetchMode(false);
       
$rs = $this->Execute(sprintf($this->metaColumnsSQL,$table));
       
        if (
$schema) {
           
$this->SelectDB($dbName);
        }
       
        if (isset(
$savem)) $this->SetFetchMode($savem);
       
$ADODB_FETCH_MODE = $save;
        if (!
is_object($rs)) {
           
$false = false;
            return
$false;
        }
           
       
$retarr = array();
        while (!
$rs->EOF){
           
$fld = new ADOFieldObject();
           
$fld->name = $rs->fields[0];
           
$type = $rs->fields[1];
           
           
// split type into type(length):
           
$fld->scale = null;
            if (
preg_match("/^(.+)\((\d+),(\d+)/", $type, $query_array)) {
               
$fld->type = $query_array[1];
               
$fld->max_length = is_numeric($query_array[2]) ? $query_array[2] : -1;
               
$fld->scale = is_numeric($query_array[3]) ? $query_array[3] : -1;
            } elseif (
preg_match("/^(.+)\((\d+)/", $type, $query_array)) {
               
$fld->type = $query_array[1];
               
$fld->max_length = is_numeric($query_array[2]) ? $query_array[2] : -1;
            } elseif (
preg_match("/^(enum)\((.*)\)$/i", $type, $query_array)) {
               
$fld->type = $query_array[1];
               
$arr = explode(",",$query_array[2]);
               
$fld->enums = $arr;
               
$zlen = max(array_map("strlen",$arr)) - 2; // PHP >= 4.0.6
               
$fld->max_length = ($zlen > 0) ? $zlen : 1;
            } else {
               
$fld->type = $type;
               
$fld->max_length = -1;
            }
           
$fld->not_null = ($rs->fields[2] != 'YES');
           
$fld->primary_key = ($rs->fields[3] == 'PRI');
           
$fld->auto_increment = (strpos($rs->fields[5], 'auto_increment') !== false);
           
$fld->binary = (strpos($type,'blob') !== false);
           
$fld->unsigned = (strpos($type,'unsigned') !== false);
               
            if (!
$fld->binary) {
               
$d = $rs->fields[4];
                if (
$d != '' && $d != 'NULL') {
                   
$fld->has_default = true;
                   
$fld->default_value = $d;
                } else {
                   
$fld->has_default = false;
                }
            }
           
            if (
$save == ADODB_FETCH_NUM) {
               
$retarr[] = $fld;
            } else {
               
$retarr[strtoupper($fld->name)] = $fld;
            }
               
$rs->MoveNext();
            }
       
           
$rs->Close();
            return
$retarr;
    }
       
   
   
// parameters use PostgreSQL convention, not MySQL
   
function SelectLimit($sql,$nrows=-1,$offset=-1,$inputarr=false,$secs=0)
    {
       
$offsetStr =($offset>=0) ? "$offset," : '';
       
// jason judge, see http://phplens.com/lens/lensforum/msgs.php?id=9220
       
if ($nrows < 0) $nrows = '18446744073709551615';
       
        if (
$secs)
           
$rs = $this->CacheExecute($secs,$sql." LIMIT $offsetStr$nrows",$inputarr);
        else
           
$rs = $this->Execute($sql." LIMIT $offsetStr$nrows",$inputarr);
        return
$rs;
    }
}
?>