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Test Your Knowledge in Computers #670
Difficulty: Medium
Fourteen channels are designated in the 2.4 GHz range, spaced 5 MHz apart from each other except for a 12 MHz space before channel 14.
True or False?
Linux & Unix Commands - Search Man Pages

false(1) [bsd man page]

FALSE(1)						      General Commands Manual							  FALSE(1)

NAME
false, true - provide truth values SYNOPSIS
true false DESCRIPTION
True and false are usually used in a Bourne shell script. They test for the appropriate status "true" or "false" before running (or fail- ing to run) a list of commands. EXAMPLE
while false do command list done SEE ALSO
csh(1), sh(1), true(1) DIAGNOSTICS
False has exit status nonzero. 4.2 Berkeley Distribution April 29, 1985 FALSE(1)

Check Out this Related Man Page

IS_INT(3)								 1								 IS_INT(3)

is_int - Find whether the type of a variable is integer

SYNOPSIS
bool is_int (mixed $var) DESCRIPTION
Finds whether the type of the given variable is integer. Note To test if a variable is a number or a numeric string (such as form input, which is always a string), you must use is_numeric(3). PARAMETERS
o $var - The variable being evaluated. RETURN VALUES
Returns TRUE if $var is an integer, FALSE otherwise. EXAMPLES
Example #1 is_int(3) example <?php $values = array(23, "23", 23.5, "23.5", null, true, false); foreach ($values as $value) { echo "is_int("; var_export($value); echo ") = "; var_dump(is_int($value)); } ?> The above example will output: is_int(23) = bool(true) is_int('23') = bool(false) is_int(23.5) = bool(false) is_int('23.5') = bool(false) is_int(NULL) = bool(false) is_int(true) = bool(false) is_int(false) = bool(false) SEE ALSO
is_bool(3), is_float(3), is_numeric(3), is_string(3), is_array(3), is_object(3). PHP Documentation Group IS_INT(3)

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