stringToBoolean()
Author: Greg Alton
Category: PHP

---

Convert common user input to a boolean

---

<?php

/*
The stringToBoolean function accepts a string and returns a boolean. This is a nice function to handle user input for a boolean, which may be 0, false, False, no or No, for example.
*/

 function stringToBoolean($str) {
     $str = trim(strtolower($str));
     if ($str == "0" || $str == "false" || $str == "no") {
         return 0;
     }else {
         return 1;
     }
 }

// Code to test stringToBoolean()

$strings = array("false","no","test","string","False",0);
foreach($strings as $string) {
    print "$string : ";
    print stringToBoolean($string)? "True":"False";
    print "<br> ";
}

?>

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