John Davidson

Message:

I have a multidimensional array as follows, which is a PHP array of shoe sizes and their conversions...

$size_array = array(

"M"=>array(

    '6'=>   array('uk'=>'6','eu'=>'39.5','us'=>'7'),

    '6H'=>  array('uk'=>'6.5','eu'=>'40','us'=>'7.5'),

    '7'=>   array('uk'=>'7','eu'=>'40.5','us'=>'8'),

    '7H'=>  array('uk'=>'7.5','eu'=>'41','us'=>'8.5'),

    '8'=>   array('uk'=>'8','eu'=>'42','us'=>'9'),

    '8H'=>  array('uk'=>'8.5','eu'=>'42.5','us'=>'9.5'),

    '9'=>   array('uk'=>'9','eu'=>'43','us'=>'10'),

    '9H'=>  array('uk'=>'9.5','eu'=>'44','us'=>'10.5'),

    '10'=>  array('uk'=>'10','eu'=>'44.5','us'=>'11'),

    '10H'=> array('uk'=>'10.5','eu'=>'45','us'=>'11.5'),

    '11'=>  array('uk'=>'11','eu'=>'46','us'=>'12'),

    '11H'=> array('uk'=>'11.5','eu'=>'46.5','us'=>'12.5'),

    '12'=>  array('uk'=>'12','eu'=>'47','us'=>'13'),

    '12H'=> array('uk'=>'12.5','eu'=>'48','us'=>'13.5'),

    '13'=>  array('uk'=>'13','eu'=>'48.5','us'=>'14')

    ),

"F"=>array(

    '3'=>   array('uk'=>'3','eu'=>'35.5','us'=>'5'),

    '3H'=>  array('uk'=>'3.5','eu'=>'36','us'=>'5.5'),

    '4'=>   array('uk'=>'4','eu'=>'37','us'=>'6'),

    '4H'=>  array('uk'=>'4.5','eu'=>'37.5','us'=>'6.5'),

    '5'=>   array('uk'=>'5','eu'=>'38','us'=>'7'),

    '5H'=>  array('uk'=>'5.5','eu'=>'38.5','us'=>'7.5'),

    '6'=>   array('uk'=>'6','eu'=>'39','us'=>'8'),

    '6H'=>  array('uk'=>'6.5','eu'=>'39.5','us'=>'8.5'),

    '7'=>   array('uk'=>'7','eu'=>'40','us'=>'9'),

    '7H'=>  array('uk'=>'7.5','eu'=>'41','us'=>'9.5'),

    '8'=>   array('uk'=>'8','eu'=>'41.5','us'=>'10'),

    '8H'=>  array('uk'=>'8.5','eu'=>'42.5','us'=>'10.5'),

    '9'=>   array('uk'=>'9','eu'=>'43','us'=>'11'),

    '9H'=>  array('uk'=>'9.5','eu'=>'43.5','us'=>'11.5'),

    '10'=>  array('uk'=>'10','eu'=>'44','us'=>'12')

    )

);

The array is part of a function that returns the conversions based on a supplied size and gender (i.e. SizeConvert('M','6') returns Array ([uk] => 6, [eu] => 39.5,[us] => 7)).

I want to extend the function to allow the passing of a value which will return the array results with any .5 values replaced with ½ (or ½) (i.e. SizeConvert('M','6','Y') returns Array ([uk] => 6, [eu] => 39½,[us] => 7))

How do I make str_replace (or a more appropriate command) iterate over the array and replace the values?

I've tried something like str_replace(".5", "&frac12", $size_array) but I guess that's not working as it's only looking at the initial array, not the sub-arrays.

---

My Answer:
You can achieve this by iterating over the multidimensional array and replacing the values with ".5" with "½". Here's an example of how you can modify your function to achieve this:

php
function SizeConvert($gender, $size, $replace = false) {
global $size_array;

$result = $size_array[$gender][$size];

if($replace) {
foreach($result as $key => $value) {
foreach($value as $subkey => $subvalue) {
$result[$key][$subkey] = str_replace(".5", "½", $subvalue);
}
}
}

return $result;
}

// Example usage
$converted_size = SizeConvert('M', '6', true);
print_r($converted_size);


In this modified function, the third parameter `$replace` is used to determine whether to replace ".5" with "½". If `$replace` is set to `true`, it will iterate over the multidimensional array and replace the values accordingly.