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Top Forums Shell Programming and Scripting Adding more text to a variable Post 302751639 by Don Cragun on Friday 4th of January 2013 08:19:33 AM
Old 01-04-2013
Note that the braces aren't needed either unless what you want to add to the variable could be interpreted by the shell to be part of the variable name.
Code:
var=blue
echo "$var"
var="$var green"
echo "$var"
var="${var}red"
echo "$var"

produces
Code:
blue
blue green
blue greenred

 

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IS_FLOAT(3)								 1							       IS_FLOAT(3)

is_float - Finds whether the type of a variable is float

SYNOPSIS
bool is_float (mixed $var) DESCRIPTION
Finds whether the type of the given variable is float. 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 a float, FALSE otherwise. EXAMPLES
Example #1 is_float(3) example <?php if (is_float(27.25)) { echo "is float "; } else { echo "is not float "; } var_dump(is_float('abc')); var_dump(is_float(23)); var_dump(is_float(23.5)); var_dump(is_float(1e7)); //Scientific Notation var_dump(is_float(true)); ?> The above example will output: is float bool(false) bool(false) bool(true) bool(true) bool(false) SEE ALSO
is_bool(3), is_int(3), is_numeric(3), is_string(3), is_array(3), is_object(3). PHP Documentation Group IS_FLOAT(3)
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