Photo has two syllables. The syllables are pho-to.
Photo is an open syllable word.
The word world has only 1 syllable.
The word worlds has one syllable.
There is one syllable.
3
First
The first syllable of "photo" is stressed and the second syllable is unstressed. The lack of stress on the second syllable has the consequence that the "t" fails to be aspirated and in American English is pronounced as a flap. You can contrast this with the word "Plato", which has some low level stress on the second syllable, causing the "t" to be aspirated and preventing it from becoming a flap.
Shoe has one syllable.
the world may never know
The word quite has one syllable.
Father has two syllables. Fa/ther
Today has two syllables. The syllables are to-day.