06-01-2014
Quote:
Originally Posted by
Scrutinizer
Hi @wisecracker:
Why do you hard-code 21 instead of ${#var_arr[@]} ?
Why use arrays when you are only enumerating a list (for i in $var; do)
No particular reason, except that it is quicker to write "21" than "${#var_arr[@]}" and less chance of a typo...
Also arrays give you the ability to hop about in any order with relative ease.
If the list can do that then it is an unknown to me...
Hope this makes sense...
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FLOATVAL(3) 1 FLOATVAL(3)
floatval - Get float value of a variable
SYNOPSIS
float floatval (mixed $var)
DESCRIPTION
Gets the float value of $var.
PARAMETERS
o $var
- May be any scalar type. floatval(3) should not be used on objects, as doing so will emit an E_NOTICE level error and return 1.
RETURN VALUES
The float value of the given variable. Empty arrays return 0, non-empty arrays return 1.
Strings will most likely return 0 although this depends on the leftmost characters of the string. The common rules of float casting apply.
EXAMPLES
Example #1
floatval(3) Example
<?php
$var = '122.34343The';
$float_value_of_var = floatval($var);
echo $float_value_of_var; // 122.34343
?>
Example #2
floatval(3) non-numeric leftmost characters Example
<?php
$var = 'The122.34343';
$float_value_of_var = floatval($var);
echo $float_value_of_var; // 0
?>
SEE ALSO
boolval(3), intval(3), strval(3), settype(3), Type juggling.
PHP Documentation Group FLOATVAL(3)