Published on November 16, 2016
replaceFirst helper method is used to replace the first occurrence of a given
$search string with the provided
$replace string in the
$subject string. All three parameters are required and must be strings.
The signature for the
replaceFirst helper method is:
replaceFirst($search, $replace, $subject)
The following examples highlight the basic usage of the
replaceFirst method. The results of the method call will appear above the call as a comment.
1use Illuminate\Support\Str;23// //maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css4Str::replaceFirst(5 'http://', '//',6 'http://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css'7);89// Hello, there!10Str::replaceFirst('there', 'Hello', 'there, there!');
str_replace_first($search, $replace, $subject)
str_replace_first function is a shortcut to calling
Str::replaceFirst. This function is declared in the global namespace.