PHP Late Static Binding - example

LSB.php

<?php

abstract class GenericParser
{
  abstract public static function getTokens();

  public function convertTextToArray($data){

    $tokens = static::getTokens();

    return array_map(function($line) use ($tokens) {
      return array_map(function($col) use ($tokens) {
        return trim($col, $tokens['enclosed_char']);
      }, explode($tokens['separator'], $line));
    }, explode($tokens['eol'], $data));
  }
}

class CSVParser extends GenericParser
{
  public static function getTokens(){
    return array(
      'eol'=>"\n",
      'separator'=>",",
      'enclosed_char'=>'"'
    );
  }
}

class TSVParser extends GenericParser
{
  public static function getTokens(){
    return array(
      'eol'=>"\n",
      'separator'=>"\t",
      'enclosed_char'=>"'"
    );
  }
}

$csvParser = new CSVParser();
print_r($csvParser->convertTextToArray(<<<TEXT
"a","b","c"
"1","2","3"
TEXT
));

$tsvParser = new TSVParser();
print_r($tsvParser->convertTextToArray("'a'\t'b'\t'c'
'1'\t'2'\t'3'"));


/*
OUTPUT:

Array
(
    [0] => Array
        (
            [0] => a
            [1] => b
            [2] => c
        )

    [1] => Array
        (
            [0] => 1
            [1] => 2
            [2] => 3
        )

)

Array
(
    [0] => Array
        (
            [0] => a
            [1] => b
            [2] => c
        )

    [1] => Array
        (
            [0] => 1
            [1] => 2
            [2] => 3
        )

)

*/