php封装的mongodb操作类代码

/* -------------------------------------------------------------------------------- WHERE LESS THAN OR EQUAL TO PARAMETERS -------------------------------------------------------------------------------- Get the documents where the value of a $field is less than or equal to $x @usage = $this->mongo_db->where_lte('foo',20); */
public function where_lte($field = "",$x) {
$this->where_init($field);
$this->wheres[$field]['$lte'] = $x;
return($this);
}

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