PHP 搜索功能数据库语句查询条件的类

<?php

class queryCondition {

var $_fieldsTypes;

var $_fields;

public function queryCondition($fieldsTypes) {

if ( is_array($fieldsTypes) ) {

$this->_fieldsTypes = $fieldsTypes;

}

}

public function getQueryWhere() {

$arr = $this->_fields;

if ( is_array($arr) ) {

$totalQueryArr = array();

foreach ($arr as $fieldName => $value) {

$queryArr = array();

if ( isset($this->_fieldsTypes[$fieldName]) ) {

$type = $this->_fieldsTypes[$fieldName];

$quote = '';

if ( $type == 'string' ) {

$quote = '"';

}

if ( count($value['and']) > 0 ) {

$str = $this->_getSubQueryWhere($fieldName, $value['and'], $quote, 1);

//                        echo $str;

if ( $str != '') {

$queryArr[] = $str;

}

}

if ( count($value['or']) > 0 ) {

$str = $this->_getSubQueryWhere($fieldName, $value['or'], $quote, 2);

if ( $str != '') {

$queryArr[] = $str;

}

}

if ( count($queryArr) > 0 ) {

$queryJoin = (isset($value['join']) && $value['join'] != '') ? ' ' . strtoupper($value['join']) . ' ' : ' AND ';

$totalQueryArr[] = implode($queryJoin, $queryArr);

}

}

}

if ( count($totalQueryArr) > 0 ) {

return implode(' AND ', $totalQueryArr);

}

}

return '';

}

protected function _getSubQueryWhere ($fieldName, $subConditions, $quote, $wholeJoin = 1) {

if ( $fieldName != '' && is_array($subConditions) && count($subConditions) > 0 ) {

$sqlArr = array();

foreach ( $subConditions as $subCondition ) {

if ( isset($subCondition['values']) && isset($subCondition['mark']) ) {

$queryValues = $this->_resetFieldValues($subCondition['values'], $quote);

$queryMark = $subCondition['mark'];

$queryJoin = strtoupper($subCondition['join']);

$markStr = $this->_getMarkStr($fieldName, $queryMark);

if ( is_array($queryValues) ) {

if ( $queryMark == 14 ) {

if (count($queryValues) == 2) {

$sqlArr[] = vsprintf($markStr, $queryValues);

} else if (count($queryValues) > 2) {

$sqlArr[] = vsprintf($markStr, array($queryValues[0], $queryValues[1]));

}

} else {

$strArr = array();

foreach ( $queryValues as $singleValue ) {

$strArr[] = vsprintf($markStr, $singleValue);

}

$sqlArr[] = implode(' ' . $queryJoin . ' ', $strArr);

}

} else if ( is_string($queryValues) ) {

$sqlArr[] = vsprintf($markStr, $queryValues);

}

}

}

if ( count($sqlArr) > 0 ) {

$wholeJoin = ( $wholeJoin == 1 ) ? ' AND ' : ' OR ';

$query = implode($wholeJoin, $sqlArr);

}

return $query;

}

return '';

}

/**************************************************

* 文 件 名：QueryCondition.php

*

* 说    明：处理SQL查询语句里的查询条件

*

* 作    者：lsf linda@vigoicu.com

*

* 创建时间：2009-3-27

*

* parameters：$fieldName: string, DB table field name

*             $fieldValue: sting or array，values for searching

*             $queryMark: int, this is SQL query operator

*                         1: LIKE

*                         2: LIKE %%

*                         3: NOT LIKE

*                         4: =

*                         5: !=

*                         6: REGEXP

*                         7: NOT REGEXP

*                         8: IS NULL

*                         9: IS NOT NULL

*                         10: >

*                         11: >=

*                         12: <

*                         13: <=

*                         14: BETWEEN

*             $queryJoin: string, 'and' 'or' you can choose how to join your multiple search condition

*             $andOr: int, assign array to which sub-array

*                     1: and

*                     2: or

*             $wholeQueryJoin: string, 'and' 'or' if both 'and sub-array' and 'or sub-array' have values, you can choose to use which relationship.

***************************************************/

public function setupFieldValueArray($fieldName, $fieldValue, $queryMark = 4, $queryJoin = 'and', $andOr = 1, $wholeQueryJoin = 'and') {

$fieldName = trim($fieldName);

$valueArr = $this->_getFieldValueMark($fieldValue, $queryMark, $queryJoin);

if (strtolower($andOr) == 1)

{

$this->_setupAndArray($fieldName, $valueArr);

}

else

{

$this->_setupOrArray($fieldName, $valueArr);

}

$this->_setupWholeQueryJoin($fieldName, $wholeQueryJoin);

}

protected function _getMarkStr($fieldName, $queryMark) {

if ( $fieldName != '' ) {

$markStr = '';

switch ( $queryMark ) {

case 1:

$markStr = "LIKE %s";

break;

case 2:

$markStr = "LIKE %%s%";

break;

case 3:

$markStr = "NOT LIKE %s";

break;

case 4:

$markStr = "= %s";

break;

case 5:

$markStr = "!= %s";

break;

case 6:

$markStr = "REGEXP %s";

break;

case 7:

$markStr = "NOT REGEXP %s";

break;

case 8:

$markStr = "IS NULL";

break;

case 9:

$markStr = "IS NOT NULL";

break;

case 10:

$markStr = "> %s";

break;

case 11:

$markStr = ">= %s";

break;

case 12:

$markStr = "< %s";

break;

case 13:

$markStr = "<= %s";

break;

case 14:

$markStr = "BETWEEN %s AND %s";

break;

default:

break;

}

if ($markStr != '') {

return $fieldName . ' ' . $markStr;

}

return '';

}

}

protected function _setupOrArray($fieldName, $arr) {

$this->_fields[$fieldName]['or'][] = $arr;

}

protected function _setupAndArray($fieldName, $arr) {

$this->_fields[$fieldName]['and'][] = $arr;

}

protected function _setupWholeQueryJoin($fieldName, $wholeQueryJoin) {

$this->_fields[$fieldName]['join'] = $wholeQueryJoin;

}

protected function _getFieldValueMark($fieldValue, $queryMark, $queryJoin) {

$fieldValue = $this->_resetFieldValues($fieldValue);

return array(

'mark' => $queryMark,

'values' => $fieldValue,

'join' => $queryJoin,

);

}

protected function _resetFieldValues($values, $quote = '') {

$tmpArr = array();

if ( is_string($values) && $values != '' ) {

return $quote . $this->_h($values) . $quote;

} else if ( is_array($values) && count($values) != 0 ) {

foreach ($values as $k => $v) {

if ($v != '') {

$tmpArr[$k] = $quote . $this->_h($v) . $quote;

}

}

return $tmpArr;

}

}

protected function _h($text) {

return trim(htmlspecialchars($text));

}

public function getWholeArray() {

// structure an array

//

//    $arr[field_name] = array(

//        'and' => array(

//                   array(

//                    'mark'=>'=',

//                    'values'=>array('linda', 'get'),

//                    'join'=>'and'

//                    ),

//                    array(

//                    'mark'=>'=',

//                    'values'=>array('linda', 'get'),

//                    'join'=>'and'

//                    ),

//                ),

//        'or' => array(),

//        'join'=>'',

//    )

return $this->_fields;

}

}

?>