Hi

i have this codes below,

Code:
{if $castingdetails.0.city neq ""},
	{$castingdetails.0.city}
{/if}
I just wonder what is 0 doing in the middle of $castingdetails and city?

Is this concatenation variables? what are the dots for? also what is neq all about?

Anyone would like to elaborate this codes please.

Thank you in advance.