PHP如何将多维数组写入文件

Question

I am trying to use files to hold an array for checkers

this is the array

$board = array(
         array(0,0,0,0,0,0,0,0,0),
         array(0,0,0,0,0,0,0,0,0),
         array(0,0,0,0,0,0,0,0,0),
         array(0,0,0,0,0,0,0,0,0),
         array(0,0,0,0,0,0,0,0,0),
         array(0,0,0,0,0,0,0,0,0),
         array(0,0,0,0,0,0,0,0,0),
         array(0,0,0,0,0,0,0,0,0),
         array(0,0,0,0,0,0,0,0,0)
   );

while also giving the values so that i can set the beginning of the board with the pieces placed in a predefined positions to start the game in then have them user input which location they want to move the pieces into

I already have this while loop

      $row = 0;
    print "<form>";
    print "<table border = 1>";
    while ($row < 8){ // Counts to 8. (from 0...7 = 8 times. 0 ... 8 = 9 times)
       print "<tr>";
       $row++;
       $col = 0; // reset column to 0 each time printing one row.

       while ($col < 8){
        print "<td>";
        if($Board[$row][$col] == 0)
        {
            $value=$row.$col;
            print "<input type=\"checkbox\" name=\"box[]\" value=\"$value\">";
            // Add \ before " otherwise it will treat as the end of the quote.

        }
        print "</td>";
        $col++;

       }

       print "</tr>";

    }
    print "</table>";
    print "</form>";

}

Answer 1

file_put_contents($f, serialize($board));

this will serialize your multidimensional array in a file.

To read it back, use

$board = unserialize(file_get_contents($f));

Answer 2

2 variants: using serialize

#dump:
file_put_contents('file_name', serialize($board));
#restore:
$board=unserialize(file_get_contents('file_name'));

using JSON:

#dump:
file_put_contents('file_name', json_encode($board));
#restore:
$board=json_decode(file_get_contents('file_name'));

JSON variant works faster, but can dump only simple structures (strings, arrays, numbers). serialize can dump objects too but works slower and generate more output

Answer 3

why don't you serialize the array and store it as a string into the file. to get the array back, you can read the string from the file and un-serialize it. have a read here here

Answer 4

Why serialize and store ? Even you can directly print array to file

ob_start();

print_r( $yourArry);

$output = ob_get_clean();

file_put_contents( 'yourfilename.txt',$output );

See example here http://www.my-php-scripts.net/index.php/Array-Scripts/php-write-multidimensional-array-into-file-advanced-php.html