1 | <?php |
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2 | |
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3 | /* |
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4 | V5.18 3 Sep 2012 (c) 2000-2012 John Lim (jlim#natsoft.com). All rights reserved. |
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5 | Released under both BSD license and Lesser GPL library license. |
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6 | Whenever there is any discrepancy between the two licenses, |
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7 | the BSD license will take precedence. See License.txt. |
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8 | Set tabs to 4 for best viewing. |
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9 | |
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10 | Latest version is available at http://adodb.sourceforge.net |
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11 | |
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12 | Thanks Diogo Toscano (diogo#scriptcase.net) for the code. |
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13 | And also Sid Dunayer [sdunayer#interserv.com] for extensive fixes. |
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14 | */ |
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15 | |
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16 | class ADODB_pdo_sqlite extends ADODB_pdo { |
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17 | var $metaTablesSQL = "SELECT name FROM sqlite_master WHERE type='table'"; |
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18 | var $sysDate = 'current_date'; |
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19 | var $sysTimeStamp = 'current_timestamp'; |
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20 | var $nameQuote = '`'; |
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21 | var $replaceQuote = "''"; |
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22 | var $hasGenID = true; |
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23 | var $_genIDSQL = "UPDATE %s SET id=id+1 WHERE id=%s"; |
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24 | var $_genSeqSQL = "CREATE TABLE %s (id integer)"; |
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25 | var $_genSeqCountSQL = 'SELECT COUNT(*) FROM %s'; |
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26 | var $_genSeq2SQL = 'INSERT INTO %s VALUES(%s)'; |
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27 | var $_dropSeqSQL = 'DROP TABLE %s'; |
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28 | var $concat_operator = '||'; |
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29 | var $pdoDriver = false; |
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30 | var $random='abs(random())'; |
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31 | |
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32 | function _init($parentDriver) |
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33 | { |
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34 | $this->pdoDriver = $parentDriver; |
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35 | $parentDriver->_bindInputArray = true; |
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36 | $parentDriver->hasTransactions = false; // // should be set to false because of PDO SQLite driver not supporting changing autocommit mode |
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37 | $parentDriver->hasInsertID = true; |
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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 | $parent = $this->pdoDriver; |
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43 | @($ver = array_pop($parent->GetCol("SELECT sqlite_version()"))); |
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44 | @($enc = array_pop($parent->GetCol("PRAGMA encoding"))); |
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45 | |
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46 | $arr['version'] = $ver; |
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47 | $arr['description'] = 'SQLite '; |
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48 | $arr['encoding'] = $enc; |
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49 | |
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50 | return $arr; |
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51 | } |
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52 | |
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53 | function SelectLimit($sql,$nrows=-1,$offset=-1,$inputarr=false,$secs2cache=0) |
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54 | { |
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55 | $parent = $this->pdoDriver; |
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56 | $offsetStr = ($offset >= 0) ? " OFFSET $offset" : ''; |
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57 | $limitStr = ($nrows >= 0) ? " LIMIT $nrows" : ($offset >= 0 ? ' LIMIT 999999999' : ''); |
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58 | if ($secs2cache) |
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59 | $rs = $parent->CacheExecute($secs2cache,$sql."$limitStr$offsetStr",$inputarr); |
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60 | else |
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61 | $rs = $parent->Execute($sql."$limitStr$offsetStr",$inputarr); |
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62 | |
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63 | return $rs; |
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64 | } |
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65 | |
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66 | function GenID($seq='adodbseq',$start=1) |
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67 | { |
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68 | $parent = $this->pdoDriver; |
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69 | // if you have to modify the parameter below, your database is overloaded, |
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70 | // or you need to implement generation of id's yourself! |
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71 | $MAXLOOPS = 100; |
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72 | while (--$MAXLOOPS>=0) { |
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73 | @($num = array_pop($parent->GetCol("SELECT id FROM {$seq}"))); |
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74 | if ($num === false || !is_numeric($num)) { |
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75 | @$parent->Execute(sprintf($this->_genSeqSQL ,$seq)); |
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76 | $start -= 1; |
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77 | $num = '0'; |
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78 | $cnt = $parent->GetOne(sprintf($this->_genSeqCountSQL,$seq)); |
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79 | if (!$cnt) { |
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80 | $ok = $parent->Execute(sprintf($this->_genSeq2SQL,$seq,$start)); |
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81 | } |
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82 | if (!$ok) return false; |
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83 | } |
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84 | $parent->Execute(sprintf($this->_genIDSQL,$seq,$num)); |
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85 | |
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86 | if ($parent->affected_rows() > 0) { |
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87 | $num += 1; |
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88 | $parent->genID = intval($num); |
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89 | return intval($num); |
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90 | } |
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91 | } |
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92 | if ($fn = $parent->raiseErrorFn) { |
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93 | $fn($parent->databaseType,'GENID',-32000,"Unable to generate unique id after $MAXLOOPS attempts",$seq,$num); |
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94 | } |
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95 | return false; |
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96 | } |
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97 | |
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98 | function CreateSequence($seqname='adodbseq',$start=1) |
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99 | { |
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100 | $parent = $this->pdoDriver; |
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101 | $ok = $parent->Execute(sprintf($this->_genSeqSQL,$seqname)); |
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102 | if (!$ok) return false; |
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103 | $start -= 1; |
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104 | return $parent->Execute("insert into $seqname values($start)"); |
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105 | } |
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106 | |
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107 | function SetTransactionMode($transaction_mode) |
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108 | { |
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109 | $parent = $this->pdoDriver; |
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110 | $parent->_transmode = strtoupper($transaction_mode); |
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111 | } |
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112 | |
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113 | function BeginTrans() |
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114 | { |
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115 | $parent = $this->pdoDriver; |
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116 | if ($parent->transOff) return true; |
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117 | $parent->transCnt += 1; |
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118 | $parent->_autocommit = false; |
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119 | return $parent->Execute("BEGIN {$parent->_transmode}"); |
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120 | } |
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121 | |
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122 | function CommitTrans($ok=true) |
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123 | { |
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124 | $parent = $this->pdoDriver; |
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125 | if ($parent->transOff) return true; |
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126 | if (!$ok) return $parent->RollbackTrans(); |
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127 | if ($parent->transCnt) $parent->transCnt -= 1; |
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128 | $parent->_autocommit = true; |
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129 | |
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130 | $ret = $parent->Execute('COMMIT'); |
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131 | return $ret; |
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132 | } |
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133 | |
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134 | function RollbackTrans() |
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135 | { |
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136 | $parent = $this->pdoDriver; |
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137 | if ($parent->transOff) return true; |
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138 | if ($parent->transCnt) $parent->transCnt -= 1; |
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139 | $parent->_autocommit = true; |
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140 | |
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141 | $ret = $parent->Execute('ROLLBACK'); |
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142 | return $ret; |
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143 | } |
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144 | |
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145 | |
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146 | // mark newnham |
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147 | function MetaColumns($tab,$normalize=true) |
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148 | { |
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149 | global $ADODB_FETCH_MODE; |
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150 | |
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151 | $parent = $this->pdoDriver; |
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152 | $false = false; |
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153 | $save = $ADODB_FETCH_MODE; |
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154 | $ADODB_FETCH_MODE = ADODB_FETCH_ASSOC; |
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155 | if ($parent->fetchMode !== false) $savem = $parent->SetFetchMode(false); |
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156 | $rs = $parent->Execute("PRAGMA table_info('$tab')"); |
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157 | if (isset($savem)) $parent->SetFetchMode($savem); |
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158 | if (!$rs) { |
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159 | $ADODB_FETCH_MODE = $save; |
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160 | return $false; |
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161 | } |
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162 | $arr = array(); |
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163 | while ($r = $rs->FetchRow()) { |
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164 | $type = explode('(',$r['type']); |
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165 | $size = ''; |
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166 | if (sizeof($type)==2) |
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167 | $size = trim($type[1],')'); |
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168 | $fn = strtoupper($r['name']); |
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169 | $fld = new ADOFieldObject; |
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170 | $fld->name = $r['name']; |
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171 | $fld->type = $type[0]; |
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172 | $fld->max_length = $size; |
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173 | $fld->not_null = $r['notnull']; |
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174 | $fld->primary_key = $r['pk']; |
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175 | $fld->default_value = $r['dflt_value']; |
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176 | $fld->scale = 0; |
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177 | if ($save == ADODB_FETCH_NUM) $arr[] = $fld; |
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178 | else $arr[strtoupper($fld->name)] = $fld; |
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179 | } |
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180 | $rs->Close(); |
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181 | $ADODB_FETCH_MODE = $save; |
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182 | return $arr; |
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183 | } |
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184 | |
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185 | function MetaTables($ttype=false,$showSchema=false,$mask=false) |
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186 | { |
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187 | $parent = $this->pdoDriver; |
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188 | |
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189 | if ($mask) { |
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190 | $save = $this->metaTablesSQL; |
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191 | $mask = $this->qstr(strtoupper($mask)); |
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192 | $this->metaTablesSQL .= " AND name LIKE $mask"; |
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193 | } |
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194 | |
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195 | $ret = $parent->GetCol($this->metaTablesSQL); |
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196 | |
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197 | if ($mask) { |
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198 | $this->metaTablesSQL = $save; |
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199 | } |
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200 | return $ret; |
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201 | } |
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202 | } |
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203 | ?> |
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