dbplus_find
(PHP 4 <= 4.1.0, PECL dbplus >= 0.9)
dbplus_find — Set a constraint on a relation
说明
Places a constraint on the given relation
.
Further calls to functions like dbplus_curr() or dbplus_next() will only return tuples matching the given constraints.
参数
-
relation
-
A relation opened by dbplus_open().
-
constraints
-
Constraints are triplets of strings containing of a domain name, a comparison operator and a comparison value. The
constraints
parameter array may consist of a collection of string arrays, each of which contains a domain, an operator and a value, or of a single string array containing a multiple of three elements.The comparison operator may be one of the following strings: '==', '>', '>=', '<', '<=', '!=', '~' for a regular expression match and 'BAND' or 'BOR' for bitwise operations.
-
tuple
-
返回值
注释
此函数是实验性的。此函数的表象,包括名称及其相关文档都可能在未来的 PHP 发布版本中未通知就被修改。使用本函数风险自担 。