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Perl Language Reference Manual
by Larry Wall and others
Paperback (6"x9"), 724 pages
ISBN 9781906966027
RRP £29.95 ($39.95)

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substr outside of string

(W substr),(F) You tried to reference a substr() that pointed outside of a string. That is, the absolute value of the offset was larger than the length of the string. See . This warning is fatal if substr is used in an lvalue context (as the left hand side of an assignment or as a subroutine argument for example).

ISBN 9781906966027Perl Language Reference ManualSee the print edition