Making Sure Strings Start With a Given Value in Laravel - Laravel 5.5 String Helper Method: start

The start helper method will make sure that a given $value always begin with exactly one occurrence of the $prefix. This helper method can be used to help generate absolute URLs from relative path names. The $prefix can be any string value.

#Signature

The signature of the start method is:

1public static function start(
2        $value,
3        $prefix
4    );

#Example Use

 1use Illuminate\Support\Str;
 2
 3// /home/path
 4echo Str::start('/home/path/' '/');
 5
 6// home/path
 7echo Str::start('home/path/', '/');
 8
 9// Generate absolute URLs from relative paths.
10$domain        = 'https://youtube.com';
11$channelPath   = Str::start('UCb9XEo_1SDNR8Ucpbktrg5A', '/channel/');
12
13$absolutePath  = Str::start($channelPath, $domain);

#Global str_start Helper Function

The str_start function is a shortcut to calling Str::start. This function is defined in the global namespace.

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