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

The TurboCommons library contains a general purpose formatCase() method inside the StringUtils class, which lets you convert a string to lots of common case formats, like CamelCase, UpperCamelCase, LowerCamelCase, snake_case, Title Case, and many more.

https://github.com/edertone/TurboCommons

To use it, import the phar file to your project and:

use org\turbocommons\src\main\php\utils\StringUtils;

echo StringUtils::formatCase('sNake_Case', StringUtils::FORMAT_CAMEL_CASE);

// will output 'sNakeCase'

Here's the link to the method source code:

https://github.com/edertone/TurboCommons/blob/b2e015cf89c8dbe372a5f5515e7d9763f45eba76/TurboCommons-Php/src/main/php/utils/StringUtils.php#L653

Answer 2

In Laravel use Str::camel()

use Illuminate\Support\Str;

$converted = Str::camel('foo_bar');

// fooBar

Answer 3

If you use Laravel framework, you can use just camel_case() method.

camel_case('this-is-a-string') // 'thisIsAString'

Answer 4

No regex or callbacks necessary. Almost all the work can be done with ucwords:

function dashesToCamelCase($string, $capitalizeFirstCharacter = false) 
{

    $str = str_replace(' ', '', ucwords(str_replace('-', ' ', $string)));

    if (!$capitalizeFirstCharacter) {
        $str[0] = strtolower($str[0]);
    }

    return $str;
}

echo dashesToCamelCase('this-is-a-string');

If you're using PHP >= 5.3, you can use lcfirst instead of strtolower.

Update

A second parameter was added to ucwords in PHP 5.4.32/5.5.16 which means we don't need to first change the dashes to spaces (thanks to Lars Ebert and PeterM for pointing this out). Here is the updated code:

function dashesToCamelCase($string, $capitalizeFirstCharacter = false) 
{

    $str = str_replace('-', '', ucwords($string, '-'));

    if (!$capitalizeFirstCharacter) {
        $str = lcfirst($str);
    }

    return $str;
}

echo dashesToCamelCase('this-is-a-string');

Answer 5

Overloaded one-liner, with doc block...

/**
 * Convert underscore_strings to camelCase (medial capitals).
 *
 * @param {string} $str
 *
 * @return {string}
 */
function snakeToCamel ($str) {
  // Remove underscores, capitalize words, squash, lowercase first.
  return lcfirst(str_replace(' ', '', ucwords(str_replace('_', ' ', $str))));
}

Answer 6

Try this:

$var='snake_case';
echo ucword($var,'_');

Output:

Snake_Case remove _ with str_replace