Highschool Sweethearts#

Welcome to Highschool Sweethearts on Exercism's PHP Track. If you need help running the tests or submitting your code, check out HELP.md. If you get stuck on the exercise, check out HINTS.md, but try and solve it without using those first :)

Introduction#

Strings#

Strings are a series of characters, surrounded by quotes. Both single and double quotes are supported.

<?php

$where = "Spain";
$what = 'rain';

String variable expansion#

In double quoted strings, if a variable is referenced while it is in scope, the value is inserted into the string.

<?php

$answer = 42;
$expanded = "The answer to life, the universe, and everything is $answer";

Character Encoding Support#

Historically, string functions in PHP only supported ASCII characters and did not support modern Unicode encodings. ASCII characters are each 1 byte, whereas Unicode characters may be 1-4 bytes in length. If needing to manipulate Unicode strings safely, refer to the multibyte versions of the historic functions.

<?php

$byte_length = strlen('😃'); // => 4
$string_length = mb_strlen('😃'); // => 1

Instructions#

In this exercise, you are going to help high school sweethearts profess their love on social media by generating an ASCII heart with their initials:

     ******       ******
   **      **   **      **
 **         ** **         **
**            *            **
**                         **
**     J. K.  +  M. B.     **
 **                       **
   **                   **
     **               **
       **           **
         **       **
           **   **
             ***
              *

1. Get the name's first letter#

Implement the HighSchoolSweetheart::firstLetter function. It should take a name and return its first letter. It should clean up any unnecessary whitespace from the name.

<?php

$sweetheart = new HighSchoolSweetheart();
$sweetheart->firstLetter("Jane");
# => "J"

2. Format the first letter as an initial#

Implement the HighSchoolSweetheart::initial function. It should take a name and return its first letter, uppercase, followed by a dot. Make sure to reuse HighSchoolSweetheart::first_letter that you defined in the previous step.

<?php

$sweetheart = new HighSchoolSweetheart();
$sweetheart->initial("jane");
# => "J."

3. Split the full name into the first name and the last name#

Implement the HighSchoolSweetheart::initials function. It should take a full name, consisting of a first name and a last name separated by a space, and return the initials. Make sure to reuse HighSchoolSweetheart::initial that you defined in the previous step.

<?php

$sweetheart = new HighSchoolSweetheart();
$sweetheart->initials("Jane Doe");
# => "J. D."

4. Put the initials inside of the heart#

Implement the HighSchoolSweetheart::pair function. It should take two full names and return the initials inside an ASCII heart. Make sure to reuse HighSchoolSweetheart::initials that you defined in the previous step.

<?php

$sweetheart = new HighSchoolSweetheart();
$sweetheart->pair("Blake Miller", "Riley Lewis")
# => """
#      ******       ******
#    **      **   **      **
#  **         ** **         **
# **            *            **
# **                         **
# **     B. M.  +  R. L.     **
#  **                       **
#    **                   **
#      **               **
#        **           **
#          **       **
#            **   **
#              ***
#               *
# """

Source#

Created by#

@neenjaw

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