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

here is very very easy solution in one line code

    $string='this-is-a-string' ;

   echo   str_replace('-', '', ucwords($string, "-"));

output ThisIsAString

Answer 2

This function is similar to @Svens's function

function toCamelCase($str, $first_letter = false) {
    $arr = explode('-', $str);
    foreach ($arr as $key => $value) {
        $cond = $key > 0 || $first_letter;
        $arr[$key] = $cond ? ucfirst($value) : $value;
    }
    return implode('', $arr);
}

But clearer, (i think :D) and with the optional parameter to capitalize the first letter or not.

Usage:

$dashes = 'function-test-camel-case';
$ex1 = toCamelCase($dashes);
$ex2 = toCamelCase($dashes, true);

var_dump($ex1);
//string(21) "functionTestCamelCase"
var_dump($ex2);
//string(21) "FunctionTestCamelCase"

Answer 3

Another simple approach:

$nasty = [' ', '-', '"', "'"]; // array of nasty characted to be removed
$cameled = lcfirst(str_replace($nasty, '', ucwords($string)));

Answer 4

Many good solutions above, and I can provide a different way that no one mention before. This example uses array. I use this method on my project Shieldon Firewall.

/**
 * Covert string with dashes into camel-case string.
 *
 * @param string $string A string with dashes.
 *
 * @return string
 */
function getCamelCase(string $string = '')
{
    $str = explode('-', $string);
    $str = implode('', array_map(function($word) {
        return ucwords($word); 
    }, $str));

    return $str;
}

Test it:

echo getCamelCase('This-is-example');

Result:

ThisIsExample

Answer 5

This can be done very simply, by using ucwords which accepts delimiter as param:

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

NOTE: Need php at least 5.4.32, 5.5.16

Answer 6

$string = explode( "-", $string );
$first = true;
foreach( $string as &$v ) {
    if( $first ) {
        $first = false;
        continue;
    }
    $v = ucfirst( $v );
}
return implode( "", $string );

Untested code. Check the PHP docs for the functions im-/explode and ucfirst.