calls / catch

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NAME

catch() - catch an evaluation error

SYNOPSIS

mixed catch( mixed expr );

DESCRIPTION

Evaluate  <expr>.  If  there  is no error, 0 is returned. If there is a
standard error, a string (with a leading '*') will be returned.

The function throw() can also be used to immediately return any  value,
except 0. catch() is not really a function call, but a directive to the
compiler.

The catch() is somewhat costly, and should not be used  just  anywhere.
Rather, use it at places where an error would destroy consistency.

SEE ALSO

error(3), throw(3), error_handler(4)