note 94951 deleted from function.is-bool by danbrown
| From: | danbrown@php.net | Date: | Fri, 04 Dec 2009 14:57:13 +0000 |
| Subject: | note 94951 deleted from function.is-bool by danbrown | ||
| References: | 1 | Groups: | php.notes |
| Request: | Send a blank email to php-notes+get-163575@lists.php.net to get a copy of this message | ||
Note Submitter: sam+nospam at samuellevy dot com
----
OK, just a little update to mine to make it more robust. I believe that it's reasonable
elegant, and seems to work a treat.
<?php
/** Checks a variable to see if it should be considered a boolean true or false.
* Also takes into account some text-based representations of true of false,
* such as 'false','N','yes','on','off', etc.
* @author Samuel Levy <sam+nospam@samuellevy.com>
* @param mixed $in The variable to check
* @param bool $strict If set to false, consider everything that is not false to
* be true.
* @return bool The boolean equivalent or null (if strict, and no exact equivalent)
*/
function boolval($in, $strict=false) {
$out = null;
$in = (is_string($in)?strtolower($in):$in);
// if not strict, we only have to check if something is false
if (in_array($in,array('false','no',
'n','0','off',false,0), true) || !$in) {
$out = false;
} else if ($strict) {
// if strict, check the equivalent true values
if
(in_array($in,array('true','yes','y','1','on',true,
), true)) {
$out = true;
}
} else {
// not strict? let the regular php bool check figure it out (will
// largely default to true)
$out = ($in?true:false);
}
return $out;
}
?>