assert in php.ini setting.

can any one tell me what is this ;assert.active = On ; assert(expr); active by default ;assert.warning = On ; issue a PHP warning for each failed ;assert.bail = Off ; don't bail out by default. ;assert.callback = 0 ; user-function to be called if an assertion ;assert.quiet_eval = 0 ; eval the expression with current setting in my php.ini file, I don't know what it is for, and it has been commented. Help would be appreciated. <smk_bk@yahoo.com> ------------------------------------------------------------------- We must use time wisely and forever realize that the time is always ripe to do right." -- Nelson Mandela -------------------------------------------------------------------