Implementing Custom Type Hinting : is_string « String « PHP

1. PHP
2. String
3. is_string

Implementing Custom Type Hinting

 
<?php
<?php
function many_hints($int, $flt, $str) {
    if (!(is_integer($int))) {
        trigger_error('$int is not of type integer', E_USER_ERROR);
    }
    if (!(is_float($flt))) {
        trigger_error('$flt is not of type float', E_USER_ERROR);
    }
    if (!(is_string($str))) {
        trigger_error('$str is not of type integer', E_USER_ERROR);
    }
    return ($int * $flt) . ' ' . $str;
}

echo '<p>', many_hints(1992, .042, 'dollars owed'), '</p>';

echo '<p>', many_hints('bob', 3, true), '</p>';
?>
  
  

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