DB++ Functions
PHP Manual

dbplus_find

Set a constraint on a relation

Description

int dbplus_find ( resource $relation , array $constraints , mixed $tuple )

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.

Parameters

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

Return Values

Notes

Warning

This function is EXPERIMENTAL. The behaviour of this function, its name, and surrounding documentation may change without notice in a future release of PHP. This function should be used at your own risk.

See Also

  • dbplus_unselect