cron_validate Function
Syntax
Arguments
- cronExpressionCharacter
The CRON expression to validate.
Returns
- ResultCharacter
Returns "valid" when the CRON expression is valid. Returns an error description in the form "Error: <errortext>" when the expression is invalid (for example, if it has too few fields).
Description
Validates a CRON expression. Returns the string "valid" if the expression is valid, or an error message in the form "Error: <errortext>" if the expression is invalid.
Description
Use cron_validate() to check whether a CRON expression is syntactically valid before using it in other CRON-related operations. This is useful when accepting CRON expressions from user input, configuration tables, or external sources.
Examples
The following examples show how to validate a CRON expression and how errors are reported.
dim cronExpression as c
cronExpression = "*/15 * * * *"
? cron_validate(cronExpression)
= "valid"
? cron_validate("")
= "Error: Too few fields"See Also