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Top Forums UNIX for Dummies Questions & Answers How to delete all email messages at ONE time? Post 302079908 by bobo on Thursday 13th of July 2006 03:46:18 PM
Old 07-13-2006
Data still have problems!!!!

type in mail
then
? d *
Illegal numeric
?


or

? d 1-3
Illegal numeric
?


These are messages that I got!!!

Please let me know what is wrong!
 

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IS_NUMERIC(3)								 1							     IS_NUMERIC(3)

is_numeric - Finds whether a variable is a number or a numeric string

SYNOPSIS
bool is_numeric (mixed $var) DESCRIPTION
Finds whether the given variable is numeric. Numeric strings consist of optional sign, any number of digits, optional decimal part and optional exponential part. Thus +0123.45e6 is a valid numeric value. Hexadecimal (e.g. 0xf4c3b00c), Binary (e.g. 0b10100111001), Octal (e.g. 0777) notation is allowed too but only without sign, decimal and exponential part. PARAMETERS
o $var - The variable being evaluated. RETURN VALUES
Returns TRUE if $var is a number or a numeric string, FALSE otherwise. EXAMPLES
Example #1 is_numeric(3) examples <?php $tests = array( "42", 1337, 0x539, 02471, 0b10100111001, 1337e0, "not numeric", array(), 9.1 ); foreach ($tests as $element) { if (is_numeric($element)) { echo "'{$element}' is numeric", PHP_EOL; } else { echo "'{$element}' is NOT numeric", PHP_EOL; } } ?> The above example will output: SEE ALSO
ctype_digit(3), is_bool(3), is_null(3), is_float(3), is_int(3), is_string(3), is_object(3), is_array(3). PHP Documentation Group IS_NUMERIC(3)
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