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  • ImagickPixelIterator::clear()

    (PECL imagick 2.0.0)

    Clear resources associated with a PixelIterator

    说明

    ImagickPixelIterator::clear(void): bool
    Warning

    本函数还未编写文档,仅有参数列表。

    Clear resources associated with a PixelIterator.

    返回值

    成功时返回TRUE

    范例

    Example #1 ImagickPixelIterator::clear()

    <?php
    function clear($imagePath) {
        $imagick = new \Imagick(realpath($imagePath));
        $imageIterator = $imagick->getPixelRegionIterator(100, 100, 250, 200);
        /* Loop through pixel rows */
        foreach ($imageIterator as $pixels) { 
            /** @var $pixel \ImagickPixel */
            /* Loop through the pixels in the row (columns) */
            foreach ($pixels as $column => $pixel) { 
                if ($column % 2) {
                    /* Paint every second pixel black*/
                    $pixel->setColor("rgba(0, 0, 0, 0)"); 
                }
            }
            /* Sync the iterator, this is important to do on each iteration */
            $imageIterator->syncIterator();
        }
        $imageIterator->clear();
        header("Content-Type: image/jpg");
        echo $imagick;
    }
    ?>