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matrix to .txt
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<?php | |
$matrix = generateMatrix(20, 20); | |
$homePath = (strtoupper(substr(PHP_OS, 0, 3)) === 'WIN' | |
? $_SERVER['HOMEDRIVE'] . $_SERVER['HOMEPATH'] | |
: $_SERVER['HOME']); | |
$filename = $homePath . '\\matrix.txt'; | |
$file = fopen($filename, 'w') or die('imposible escribir en ' . $filename); | |
$content = ''; | |
$widthColumns = []; | |
foreach ($matrix as $row) { | |
foreach ($row as $x => $number) { | |
if (!isset($widthColumns[$x])) { | |
$widthColumns[$x] = []; | |
} | |
$widthColumns[$x][] = strlen((string) $number); | |
} | |
} | |
foreach ($widthColumns as $i => $c) { | |
$widthColumns[$i] = max($c); | |
} | |
foreach ($matrix as $row) { | |
foreach ($row as $column => $number) { | |
if ($widthColumns[$column] > strlen((string) $number)) { | |
$content .= str_repeat(' ', $widthColumns[$column] - strlen((string) $number)); | |
} | |
$content .= $number . ', '; | |
} | |
$content .= PHP_EOL; | |
} | |
echo $content . PHP_EOL; | |
if (fwrite($file, $content)) { | |
echo 'matriz escrita en el fichero: ' . $filename; | |
exit(0); | |
} else { | |
echo 'error al escribir en el fichero: ' . $filename; | |
exit(1); | |
} | |
fclose($file); | |
function generateMatrix($sizeX = 1, $sizeY = 1) | |
{ | |
$sizeX = max(1, $sizeX); | |
$sizeY = max(1, $sizeY); | |
$size = [$sizeX, $sizeY]; | |
$matrix = []; // definimos la matriz | |
// columnas | |
$columns = range(0, $size[0] - 1); // genera un array entre 0 y $size[0] | |
// filas | |
$rows = range(0, $size[1] - 1); // genera un array entre 0 y $size[1] | |
/* 2 iteraciones (foreach), una para las filas y otro para las columnas */ | |
// iteramos las filas | |
foreach ($rows as $row) { | |
// definimos la fila como un array y cada elemento | |
// de ese array es una columna | |
if (!isset($matrix[$row])) { | |
$matrix[$row] = []; | |
} | |
// iteramos las columnas | |
foreach ($columns as $column) { | |
// el aleatorio será par si la columna es impar | |
$pair = ($column + 1) % 2 !== 0; | |
// generamos el aleatorio entre 1 y $size[0] * $size[1] | |
$random = getRandom(1, $size[0] * $size[1], $pair); | |
// agregamos el numero aleatorio | |
$matrix[$row][$column] = $random; | |
} | |
} | |
return $matrix; | |
} | |
// funcion para obtener un aleatorio par o impar | |
function getRandom($min = 0, $max = 999, $pair = true) | |
{ | |
do { | |
$number = random_int($min, $max); | |
} while ($pair ? ($number % 2 !== 0) : ($number % 2 === 0)); | |
return $number; | |
} |
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