Convert Dashes to CamelCase in PHP

Question

Can someone help me complete this PHP function? I want to take a string like this: \'this-is-a-string\' and convert it to this: \'thisIsAString\':

function d         


        

Answer 1

Try this:

 return preg_replace("/\-(.)/e", "strtoupper('\\1')", $string);

Answer 2

You're looking for preg_replace_callback, you can use it like this :

$camelCase = preg_replace_callback('/-(.?)/', function($matches) {
     return ucfirst($matches[1]);
}, $dashes);

Answer 3

function camelize($input, $separator = '_')
{
    return lcfirst(str_replace($separator, '', ucwords($input, $separator)));
}

echo ($this->camelize('someWeir-d-string'));
// output: 'someWeirdString';

Answer 4

this is my variation on how to deal with it. Here I have two functions, first one camelCase turns anything into a camelCase and it wont mess if variable already contains cameCase. Second uncamelCase turns camelCase into underscore (great feature when dealing with database keys).

function camelCase($str) {
    $i = array("-","_");
    $str = preg_replace('/([a-z])([A-Z])/', "\\1 \\2", $str);
    $str = preg_replace('@[^a-zA-Z0-9\-_ ]+@', '', $str);
    $str = str_replace($i, ' ', $str);
    $str = str_replace(' ', '', ucwords(strtolower($str)));
    $str = strtolower(substr($str,0,1)).substr($str,1);
    return $str;
}
function uncamelCase($str) {
    $str = preg_replace('/([a-z])([A-Z])/', "\\1_\\2", $str);
    $str = strtolower($str);
    return $str;
}

lets test both:

$camel = camelCase("James_LIKES-camelCase");
$uncamel = uncamelCase($camel);
echo $camel." ".$uncamel;

Answer 5

private function dashesToCamelCase($string)
{
    $explode = explode('-', $string);
    $return = '';
    foreach ($explode as $item) $return .= ucfirst($item);

    return lcfirst($return);
}

Answer 6

Here is another option:

private function camelcase($input, $separator = '-')     
{
    $array = explode($separator, $input);

    $parts = array_map('ucwords', $array);

    return implode('', $parts);
}