LineDumper

Show and compare strings - line by line.

Summary

This PHP class, LineDumper, provides a utility for comparing two strings line by line and highlights the differences between them.

• If the strings are identical, it simply returns "Strings are equal!".

• If they differ, it compares them line by line, indicating mismatches with color-coded output using ANSI escape codes.

Details

• Namespace and Class Definition: The class is defined under the CornCodeCreations namespace.
• compareLines Method:
  • Input: It takes two strings, $expectedString and $actualString, which represent the expected output and the actual output.
  • Output: It returns a string containing either a confirmation that the strings are equal or a line-by-line comparison highlighting differences.
  • String Splitting: The strings are split into arrays of lines using explode("\n", $string).
  • Line Number Width: The line numbers are padded to a width of 3 characters.
  • Comparison: Each line from the expected string is compared to the corresponding line in the actual string:
    • If the lines match, it outputs them with a simple "ok" status.
    • If they don't match, it outputs the expected line in yellow (to-be) and the actual line in red (as-is).

Example

Input

$expected = "This is a line.\nAnother line.";
$actual   = "This is a line.\nAnother different line.";

$comparedLines = LineDumper::compareLines($expected, $actual);

echo($comparedLines);

Output

Line   1|   ok| This is a line.
Line   2|to-be| Another line.
Line   2|as-is| Another different line.

Installation

$ composer require corncodecreations/line-dumper