PHP Functions Essential Reference

is_scalar

bool is_scalar(mixed value) 

Test whether a value is a scalar.

Returns:

TRUE if the value is a scalar; FALSE otherwise

Description:

is_scalar() tests whether a value is a scalar value. Values of types boolean, double, integer, or string are considered to be scalar values.

If the value is a scalar, the function returns TRUE. If not, FALSE is returned.

Availability:

UNIX, Windows

Version:

PHP 4.0.5+

See also:

gettype() 

Example:

Test whether a value is scalar

$value = array (1); if (is_scalar ($value)) print "Value \$value is a scalar value."; else print "Value \$value is not a scalar value.";