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    imageflip

    (PHP 5 >= 5.5.0, PHP 7, PHP 8)

    imageflip — Flips an image using a given mode

    Açıklama

    imageflip(GdImage $image, int $mode): bool

    Flips the image image using the given mode.

    Değiştirgeler

    görüntü

    imagecreatetruecolor() gibi bir görüntü oluşturma işlevinden dönen bir GdImage nesnesi.

    mode

    Flip mode, this can be one of the IMG_FLIP_* constants:

    Constant Meaning
    IMG_FLIP_HORIZONTAL Flips the image horizontally.
    IMG_FLIP_VERTICAL Flips the image vertically.
    IMG_FLIP_BOTH Flips the image both horizontally and vertically.

    Dönen Değerler

    Başarı durumunda true, başarısızlık durumunda false döner.

    Sürüm Bilgisi

    Sürüm: Açıklama
    8.0.0 görüntü değiştirgesinde artık bir GdImage nesnesi aktarmak gerekiyor; evvelce resource türünde bir değer gerekirdi.

    Örnekler

    Örnek 1 Flips an image vertically

    This example uses the IMG_FLIP_VERTICAL constant.

    <?php
    // File
    $filename = 'phplogo.png';

    // Content type
    header('Content-type: image/png');

    // Load
    $im = imagecreatefrompng($filename);

    // Flip it vertically
    imageflip($im, IMG_FLIP_VERTICAL);

    // Output
    imagejpeg($im);
    imagedestroy($im);
    ?>

    Yukarıdaki örnek şuna benzer bir çıktı üretir:

    Output of example: Vertically flipped image

    Örnek 2 Flips the image horizontally

    This example uses the IMG_FLIP_HORIZONTAL constant.

    <?php
    // File
    $filename = 'phplogo.png';

    // Content type
    header('Content-type: image/png');

    // Load
    $im = imagecreatefrompng($filename);

    // Flip it horizontally
    imageflip($im, IMG_FLIP_HORIZONTAL);

    // Output
    imagejpeg($im);
    imagedestroy($im);
    ?>

    Yukarıdaki örnek şuna benzer bir çıktı üretir:

    Output of example: Horizontally flipped image

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    User Contributed Notes 1 note

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    4
    Daniel Klein
    8 years ago
    If you're using PHP < 5.5 you can use this code to add the same functionality. If you pass the wrong $mode in it will silently fail. You might want to add your own error handling for this case.

    <?php
    if (!function_exists('imageflip')) {
          define('IMG_FLIP_HORIZONTAL', 0);
          define('IMG_FLIP_VERTICAL', 1);
          define('IMG_FLIP_BOTH', 2);

      function     imageflip($image, $mode) {
        switch (    $mode) {
          case     IMG_FLIP_HORIZONTAL: {
                $max_x = imagesx($image) - 1;
                $half_x = $max_x / 2;
                $sy = imagesy($image);
                $temp_image = imageistruecolor($image)? imagecreatetruecolor(1, $sy): imagecreate(1, $sy);
            for (    $x = 0; $x < $half_x; ++$x) {
                  imagecopy($temp_image, $image, 0, 0, $x, 0, 1, $sy);
                  imagecopy($image, $image, $x, 0, $max_x - $x, 0, 1, $sy);
                  imagecopy($image, $temp_image, $max_x - $x, 0, 0, 0, 1, $sy);
            }
            break;
          }
          case     IMG_FLIP_VERTICAL: {
                $sx = imagesx($image);
                $max_y = imagesy($image) - 1;
                $half_y = $max_y / 2;
                $temp_image = imageistruecolor($image)? imagecreatetruecolor($sx, 1): imagecreate($sx, 1);
            for (    $y = 0; $y < $half_y; ++$y) {
                  imagecopy($temp_image, $image, 0, 0, 0, $y, $sx, 1);
                  imagecopy($image, $image, 0, $y, 0, $max_y - $y, $sx, 1);
                  imagecopy($image, $temp_image, 0, $max_y - $y, 0, 0, $sx, 1);
            }
            break;
          }
          case     IMG_FLIP_BOTH: {
                $sx = imagesx($image);
                $sy = imagesy($image);
                $temp_image = imagerotate($image, 180, 0);
                imagecopy($image, $temp_image, 0, 0, 0, 0, $sx, $sy);
            break;
          }
          default: {
            return;
          }
        }
            imagedestroy($temp_image);
      }
    }
    ?>
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