Determines whether a string contains ASCII control characters.
Category: | String |
Returned data type: | Boolean |
HAS_CONTROL_CHARS(string)
string
is a string to be search for existence of any ASCII control characters
The HAS_CONTROL_CHARS function can be used to identify non-printable ASCII controls characters as found on the ASCII character table.
Note: The only control character the HAS_CONTROL_CHARS function does not detect is 0 (null character).
boolean result_1
string error_message1
string test
test="Contol character: "&chr(13)
result_1=has_control_chars(test)
if(result_1)
error_message1 = "test string contains control character"
else
error_message1 = "test string does not contain control character"