INDEXOF(<array[]>,<#outvar>,<searchfor>,[casesensitiv])
Gets the first index of <searchfor> in <array[]> and stores it in <#outvar>.
[casesensitiv] can be set to true which will cause the check to be case-sensitiv. (By default the search is case-insensitiv.)
Returns the found index.
Example
&array[] = "Looking"
&array[] = "for"
&array[] = "Hello"
&array[] = "World"
INDEXOF(&array[],#variant1,"Hello")
#variant2 = INDEXOF(&array[],,"Not here")
// Output 2 and -1 respectively
LOG(%#variant1%)
LOG(%#variant2%)