"Section 2187.    Compensation of vice-mayor and councilors — Full pay for sick mayor. — The municipal council may grant to the vice-mayor and each councilor a per diem not to exceed ten pesos in municipalities of the first class; eight pesos in municipalities of the second class; six pesos in the municipalities of the third class; and five pesos in the fourth and fifth class municipalities, for each day of regular and special session of the council actually attended by them. When, by reason of absence, suspension, or other disability, the mayor ceases to discharge the duties of his office, the vice-mayor or councilor acting as mayor shall receive compensation equivalent to the salary of the mayor during the period of such service. 

"The mayor shall receive full salary when absent from the municipality upon occasion of any meeting of any mayors convoked by the provincial board or when absent therefrom upon any other business the performance of which is required of him by express provision of law or competent administrative authority or, if the general funds of the municipality permit, when he is absent from his office because of his illness contracted through no fault of his own, provided the absence in the latter case does not exceed thirty days during the year, which fact must be attested by an affidavit of the interested party and by a medical certificate or, if there be no physician in the locality, by a health officer's certificate; and if during such authorized or justified absence the vice-mayor or a councilor temporarily discharges the local duties of the mayor, the officer rendering such service shall receive compensation in an amount which shall be fixed by the council, which amount shall be equal to the salary of mayor for the same period: Provided, That per diem for attendance of the sessions of the council shall not be paid to an officer rendering such service: Provided, further, That if in case of authorized absence in any one year, the salary of the vice-mayor or councilor shall exceed fifty per centum of the basic salary of the mayor, the excess shall be paid from the salary of the mayor.

"When absent from their permanent stations on official business other than attendance at the session of the council, the vice-mayor and councilors shall be allowed their actual expenses of travel."