For beginners, just to be VERY aware '[' and 'test' are NOT quite the same although they do a similar thing...
They cannot __cross-pollnate__.
Code:
Last login: Tue Jan 20 18:45:37 on ttys000
AMIGA:barrywalker~> var="Bazza..."
AMIGA:barrywalker~> if test "$var" == "Bazza..."; then echo "$var"; fi
Bazza...
AMIGA:barrywalker~> if [ "$var" == "Bazza..."; then echo "$var"; fi
-bash: [: missing `]'
AMIGA:barrywalker~> # Oh dear '[' and 'test' are not quite the same...
AMIGA:barrywalker~> if [ "$var" == "Bazza..." ]; then echo "$var"; fi
Bazza...
AMIGA:barrywalker~> if test "$var" == "Bazza..." ]; then echo "$var"; fi
-bash: test: too many arguments
AMIGA:barrywalker~> # Oh dear 'test' doesn't allow a closing square bracket...
AMIGA:barrywalker~> _
This User Gave Thanks to wisecracker For This Post:
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Discussion started by: gjws
2 Replies
LEARN ABOUT PHP
is_float
IS_FLOAT(3) 1 IS_FLOAT(3)is_float - Finds whether the type of a variable is floatSYNOPSIS
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)