The substr function allows you to extract a substring from a string. The syntax for the substr function is:
substr(string, start_position, length)
string is the source string.
start_position is the position for extraction. The first position in the string is always 1.
length is the number of characters to extract
<?xdofx:substr('128.000',5,1)?>
output = 0
The instr function returns the location of a substring in a string. The syntax for the instr function is:
instr(string1,string2,[start_position],[nth_appearance])
string1 is the string to search.
string2 is the substring to search for in string1.
start_position is the position in string1 where the search will start. The first position in the string is 1. If the start_position is negative, the function counts back start_position number of characters from the end of string1 and then searches towards the beginning of string1.
nth appearance is the nth appearance of string2.
<?xdofx:Instr('128.000','.',1)?>
output = 4
Here is an example to use substr and instr function together
Suppose SSR_TOT_EN_TKNGPA = '128.000'
<?xdofx:substr(SSR_TOT_EN_TKNGPA,Instr(SSR_TOT_EN_TKNGPA,'.',1) + 1,1)?>
output = 0
