Book Image

Laravel 5 Essentials

By : Martin Bean
Book Image

Laravel 5 Essentials

By: Martin Bean

Overview of this book

Table of Contents (15 chapters)
Laravel 5 Essentials
About the Author
About the Reviewers

String and text manipulation

The string manipulation functions are found in the Illuminate\Support namespace and are callable on the Str object.

Most of the functions also have shorter snake_case aliases. For example, the Str::endsWith() method is identical to the global ends_with() function. We are free to use whichever one we prefer in our application.

Boolean functions

The following functions return the true or false values:

  • The is method checks whether a value matches a pattern. The asterisk can be used as a wildcard character as shown here:

    Str::is('projects/*', 'projects/php/'); // Returns true
  • The contains method, as shown in the following code, checks whether a string contains a given substring:

    Str::contains('Getting Started With Laravel', 'Python');
    // returns false
  • The startsWith and endsWith methods, as shown in the following code, check whether a string starts or ends with one or more substrings:

    Str::startsWith('.gitignore', '.git'); // Returns true
    Str::endsWith('index.php', ['html', 'php']); // Returns true

As you can see from the preceding examples, these methods are handy for validation filenames and similar data.

Transformation functions

In some cases, you need to transform a string before displaying it to the user or using it in a URL. Laravel provides the following helpers to achieve this:

  • This function generates a URL-friendly string:

    Str::slug('A/B testing is fun!');
    // Returns "ab-testing-is-fun"
  • This function generates a title where every word is capitalized:

    Str::title('getting started with laravel');
    // Returns 'Getting Started With Laravel'
  • This function caps a string with an instance of a given character:

    Str::finish('/one/trailing/slash', '/');
    Str::finish('/one/trailing/slash/', '/');
    // Both will return '/one/trailing/slash/'
  • This function limits the number of characters in a string:

    Str::limit($value, $limit = 100, $end = '...')
  • This function limits the number of words in a string:

    Str::words($value, $words = 100, $end = '...')

Inflection functions

The following functions help you find out the plural or singular form of a word, even if it is irregular:

  • This function finds out the plural form of a word:

    // Returns 'cats'
    // Returns 'fish'
    // Returns 'monkeys'
  • This function finds out the singular form of a word:

    // Returns 'elf'