I have an array thats generated dynamically and it has some empty elements. How do I get rid of empty elements from an array?

array
0 => string '' (length=0)
1 => string 'x%6wm' (length=5)
2 => string 'x%6wmvf' (length=7) 3 => string 'x%645' (length=5) 4 => string '' (length=0)

And I want it to become like

array
0 => string 'x%6wm' (length=5)
1 => string 'x%6wmvf' (length=7)
2 => string 'x%645' (length=5)
Thanks