Resets the pixel iterator

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- PHP Manual
- ImagickPixelIterator
- Resets the pixel iterator

# ImagickPixelIterator::resetIterator

(PECL imagick 2, PECL imagick 3)

ImagickPixelIterator::resetIterator — Resets the pixel iterator

### Description

public ImagickPixelIterator::resetIterator(): bool
Warning

This function is currently not documented; only its argument list is available.

Resets the pixel iterator. Use it in conjunction with ImagickPixelIterator::getNextIteratorRow() to iterate over all the pixels in a pixel container.

### Return Values

Returns `true` on success.

### Examples

Example #1 ImagickPixelIterator::resetIterator()

    <?php
    function resetIterator($imagePath) {

        $imagick = new \Imagick(realpath($imagePath));

        $imageIterator = $imagick->getPixelIterator();

        /* Loop trough pixel rows */
        foreach ($imageIterator as $pixels) {
            /* Loop through the pixels in the row (columns) */
            foreach ($pixels as $column => $pixel) {
                /** @var $pixel \ImagickPixel */
                if ($column % 2) {

                    /* Make every second pixel 25% red*/
                    $pixel->setColorValue(\Imagick::COLOR_RED, 64);
                }
            }
            /* Sync the iterator, this is important to do on each iteration */
            $imageIterator->syncIterator();
        }

        $imageIterator->resetiterator();

        /* Loop trough pixel rows */
        foreach ($imageIterator as $pixels) {
            /* Loop through the pixels in the row (columns) */
            foreach ($pixels as $column => $pixel) {
                /** @var $pixel \ImagickPixel */
                if ($column % 3) {
                    $pixel->setColorValue(\Imagick::COLOR_BLUE, 64); /* Make every second pixel a little blue*/
                    //$pixel->setColor("rgba(0, 0, 128, 0)"); /* Paint every second pixel black*/
                }
            }
            $imageIterator->syncIterator(); /* Sync the iterator, this is important to do on each iteration */
        }

        $imageIterator->clear();

        header("Content-Type: image/jpg");
        echo $imagick;
    }

    ?>