Solution for: http://adventofcode.com/2017/day/2 in php part 2

advent-day2-2.php

<?php

$file = nl2br( file_get_contents( 'input.txt' ) );

$arr = array_filter( preg_split( '/\\r\\n|\\r|\\n/', $file ) );
$res = [];

function divison_check( $arr ) {
  $cur_num;
  $arr_len = count( $arr );

  for ( $i = 0; $i < $arr_len; $i++ ) {
    $curr_num = $arr[ $i ];
    for ( $j = 0; $j < $arr_len; $j++ ) {
      if ( $j !== $i ) {
        if ( is_int( $curr_num / $arr[ $j ] ) ) {
          return $curr_num / $arr[ $j ];
        }
      }
    }
  }
}

foreach ( $arr as $a_key => $a_value ) {
  $single_arr = preg_split( '/\t/', $a_value );
  $single_arr = array_map( 'intval', $single_arr );
  $res[] = divison_check( $single_arr );
}

$sum = 0;

foreach ( $res as $r_key => $r_value ) {
  $sum += $r_value;
}

print_r($sum);