Thinkphp multi-condition query using mongodb _ PHP

This article mainly introduces Thinkphp's multi-condition query method using mongodb database, modified the mongodb driver file to implement composite query and multi-condition query. if you need it, refer to MongoDBThinkPHP.

One project uses the mongodb database and the query conditions are and or. according to the official Thinkphp manual, use composite query (_ complex) and getLastSql to output query statements, the query condition is null. query in string mode (_ string). The request string query (_ query) cannot meet the requirements. it is estimated that there are not many users using mongodb, and thinkphp does not officially support this. enable thinkphp mongodb Driver, Thinkphp/Extend/Driver/Db/DbMongo. class. php: Find the protected function parseThinkWhere ($ key, $ val) method. we can find that _ complex is not found in the switch. that is to say, when Thinkphp uses mongodb, composite queries are not supported at all. add:

The code is as follows:
Case '_ complex': // composite query
$ Arr = array ();
Foreach ($ val as $ nkey => $ nval ){
If (strpos ($ nkey ,'_')! = 0)
{
$ ParseArr = $ this-> parseWhereItem ($ nkey, $ nval );
// Convert to an object
$ Obj = new stdClass ();
Foreach ($ parseArr as $ pkey => $ pval)
{
$ Obj-> $ pkey = $ pval;
}
Array_push ($ arr, $ obj );
}
}
If (isset ($ val ['_ logic']) & strtolower ($ val ['_ logic']) = 'or '){
Unset ($ val ['_ logic']);
$ Query ['$ or'] = $ arr;
}
Break;

Here we want to convert it to an object because thinkphp uses the json_encode function to generate a query statement. However, if the array element contains a key, the json_encode function will convert the array to an object, which mongodb cannot recognize. because only or is used currently, the code only processes or.
In addition, a BUG (not sure if it is not counted) is found in the parseWhere method:
The code is as follows:
Foreach ($ where as $ key => $ val ){
If ('_ id '! = $ Key & 0 === strpos ($ key ,'_')){
// Parse special condition expressions
// Original $ query = $ this-> parseThinkWhere ($ key, $ val );
$ Query = array_merge ($ query, $ this-> parseThinkWhere ($ key, $ val ));
} Else {
// Security filtering of query fields
If (! Preg_match ('/^ [A-Z _ \ | \ & \-. a-z0-9] + $/', trim ($ key ))){
Throw_exception (L ('_ ERROR_QUERY _'). ':'. $ key );
}
$ Key = trim ($ key );
If (strpos ($ key, '| ')){
$ Array = explode ('|', $ key );
$ Str = array ();
Foreach ($ array as $ k ){
$ Str [] = $ this-> parseWhereItem ($ k, $ val );
}
$ Query ['$ or'] = $ str;
} Elseif (strpos ($ key ,'&')){
$ Array = explode ('&', $ key );
$ Str = array ();
Foreach ($ array as $ k ){
$ Str [] = $ this-> parseWhereItem ($ k, $ val );
}
$ Query = array_merge ($ query, $ str );
} Else {
$ Str = $ this-> parseWhereItem ($ key, $ val );
$ Query = array_merge ($ query, $ str );
}
}
}

When a special conditional expression is parsed, $ query = $ this-> parseThinkWhere ($ key, $ val) is in the source code. when a special expression is not the first element in the where array, an error occurs. The $ query array obtained by the code in else is missing.