1 | <?php |
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2 | |
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3 | |
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4 | /* |
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5 | V4.94 23 Jan 2007 (c) 2000-2007 John Lim (jlim#natsoft.com.my). All rights reserved. |
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6 | Released under both BSD license and Lesser GPL library license. |
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7 | Whenever there is any discrepancy between the two licenses, |
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8 | the BSD license will take precedence. |
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9 | Set tabs to 8. |
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10 | |
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11 | */ |
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12 | |
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13 | class ADODB_pdo_mysql extends ADODB_pdo { |
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14 | var $metaTablesSQL = "SHOW TABLES"; |
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15 | var $metaColumnsSQL = "SHOW COLUMNS FROM `%s`"; |
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16 | var $sysDate = 'CURDATE()'; |
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17 | var $sysTimeStamp = 'NOW()'; |
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18 | var $nameQuote = '`'; |
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19 | |
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20 | function _init($parentDriver) |
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21 | { |
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22 | |
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23 | $parentDriver->hasTransactions = false; |
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24 | $parentDriver->_bindInputArray = false; |
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25 | $parentDriver->hasInsertID = true; |
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26 | $parentDriver->_connectionID->setAttribute(PDO::MYSQL_ATTR_USE_BUFFERED_QUERY,true); |
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27 | } |
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28 | |
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29 | // dayFraction is a day in floating point |
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30 | function OffsetDate($dayFraction,$date=false) |
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31 | { |
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32 | if (!$date) $date = $this->sysDate; |
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33 | |
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34 | $fraction = $dayFraction * 24 * 3600; |
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35 | return $date . ' + INTERVAL ' . $fraction.' SECOND'; |
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36 | |
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37 | // return "from_unixtime(unix_timestamp($date)+$fraction)"; |
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38 | } |
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39 | |
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40 | function ServerInfo() |
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41 | { |
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42 | $arr['description'] = ADOConnection::GetOne("select version()"); |
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43 | $arr['version'] = ADOConnection::_findvers($arr['description']); |
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44 | return $arr; |
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45 | } |
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46 | |
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47 | function &MetaTables($ttype=false,$showSchema=false,$mask=false) |
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48 | { |
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49 | $save = $this->metaTablesSQL; |
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50 | if ($showSchema && is_string($showSchema)) { |
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51 | $this->metaTablesSQL .= " from $showSchema"; |
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52 | } |
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53 | |
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54 | if ($mask) { |
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55 | $mask = $this->qstr($mask); |
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56 | $this->metaTablesSQL .= " like $mask"; |
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57 | } |
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58 | $ret =& ADOConnection::MetaTables($ttype,$showSchema); |
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59 | |
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60 | $this->metaTablesSQL = $save; |
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61 | return $ret; |
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62 | } |
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63 | |
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64 | function SetTransactionMode( $transaction_mode ) |
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65 | { |
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66 | $this->_transmode = $transaction_mode; |
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67 | if (empty($transaction_mode)) { |
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68 | $this->Execute('SET TRANSACTION ISOLATION LEVEL REPEATABLE READ'); |
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69 | return; |
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70 | } |
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71 | if (!stristr($transaction_mode,'isolation')) $transaction_mode = 'ISOLATION LEVEL '.$transaction_mode; |
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72 | $this->Execute("SET SESSION TRANSACTION ".$transaction_mode); |
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73 | } |
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74 | |
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75 | function &MetaColumns($table) |
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76 | { |
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77 | $this->_findschema($table,$schema); |
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78 | if ($schema) { |
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79 | $dbName = $this->database; |
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80 | $this->SelectDB($schema); |
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81 | } |
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82 | global $ADODB_FETCH_MODE; |
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83 | $save = $ADODB_FETCH_MODE; |
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84 | $ADODB_FETCH_MODE = ADODB_FETCH_NUM; |
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85 | |
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86 | if ($this->fetchMode !== false) $savem = $this->SetFetchMode(false); |
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87 | $rs = $this->Execute(sprintf($this->metaColumnsSQL,$table)); |
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88 | |
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89 | if ($schema) { |
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90 | $this->SelectDB($dbName); |
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91 | } |
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92 | |
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93 | if (isset($savem)) $this->SetFetchMode($savem); |
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94 | $ADODB_FETCH_MODE = $save; |
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95 | if (!is_object($rs)) { |
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96 | $false = false; |
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97 | return $false; |
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98 | } |
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99 | |
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100 | $retarr = array(); |
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101 | while (!$rs->EOF){ |
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102 | $fld = new ADOFieldObject(); |
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103 | $fld->name = $rs->fields[0]; |
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104 | $type = $rs->fields[1]; |
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105 | |
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106 | // split type into type(length): |
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107 | $fld->scale = null; |
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108 | if (preg_match("/^(.+)\((\d+),(\d+)/", $type, $query_array)) { |
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109 | $fld->type = $query_array[1]; |
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110 | $fld->max_length = is_numeric($query_array[2]) ? $query_array[2] : -1; |
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111 | $fld->scale = is_numeric($query_array[3]) ? $query_array[3] : -1; |
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112 | } elseif (preg_match("/^(.+)\((\d+)/", $type, $query_array)) { |
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113 | $fld->type = $query_array[1]; |
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114 | $fld->max_length = is_numeric($query_array[2]) ? $query_array[2] : -1; |
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115 | } elseif (preg_match("/^(enum)\((.*)\)$/i", $type, $query_array)) { |
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116 | $fld->type = $query_array[1]; |
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117 | $arr = explode(",",$query_array[2]); |
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118 | $fld->enums = $arr; |
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119 | $zlen = max(array_map("strlen",$arr)) - 2; // PHP >= 4.0.6 |
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120 | $fld->max_length = ($zlen > 0) ? $zlen : 1; |
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121 | } else { |
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122 | $fld->type = $type; |
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123 | $fld->max_length = -1; |
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124 | } |
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125 | $fld->not_null = ($rs->fields[2] != 'YES'); |
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126 | $fld->primary_key = ($rs->fields[3] == 'PRI'); |
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127 | $fld->auto_increment = (strpos($rs->fields[5], 'auto_increment') !== false); |
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128 | $fld->binary = (strpos($type,'blob') !== false); |
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129 | $fld->unsigned = (strpos($type,'unsigned') !== false); |
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130 | |
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131 | if (!$fld->binary) { |
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132 | $d = $rs->fields[4]; |
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133 | if ($d != '' && $d != 'NULL') { |
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134 | $fld->has_default = true; |
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135 | $fld->default_value = $d; |
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136 | } else { |
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137 | $fld->has_default = false; |
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138 | } |
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139 | } |
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140 | |
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141 | if ($save == ADODB_FETCH_NUM) { |
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142 | $retarr[] = $fld; |
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143 | } else { |
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144 | $retarr[strtoupper($fld->name)] = $fld; |
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145 | } |
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146 | $rs->MoveNext(); |
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147 | } |
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148 | |
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149 | $rs->Close(); |
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150 | return $retarr; |
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151 | } |
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152 | |
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153 | |
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154 | // parameters use PostgreSQL convention, not MySQL |
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155 | function &SelectLimit($sql,$nrows=-1,$offset=-1,$inputarr=false,$secs=0) |
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156 | { |
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157 | $offsetStr =($offset>=0) ? "$offset," : ''; |
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158 | // jason judge, see http://phplens.com/lens/lensforum/msgs.php?id=9220 |
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159 | if ($nrows < 0) $nrows = '18446744073709551615'; |
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160 | |
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161 | if ($secs) |
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162 | $rs =& $this->CacheExecute($secs,$sql." LIMIT $offsetStr$nrows",$inputarr); |
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163 | else |
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164 | $rs =& $this->Execute($sql." LIMIT $offsetStr$nrows",$inputarr); |
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165 | return $rs; |
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166 | } |
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167 | } |
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168 | ?> |
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