Edit Report a Bug

    Imagick::setProgressMonitor

    (No version information available, might only be in Git)

    Imagick::setProgressMonitor — Description

    설명

    public void Imagick::setProgressMonitor ( callable $callback )

    Set a callback that will be called during the processing of the Imagick image.

    인수

    callback

    The progress function to call. It should return true if image processing should continue, or false if it should be cancelled. The offset parameter indicates the progress and the span parameter indicates the total amount of work needed to be done.

    bool callback ( mixed $offset , mixed $span )
    Caution

    The values passed to the callback function are not consistent. In particular the span parameter can increase during image processing. Because of this calculating the percentage complete of an image operation is not trivial.

    반환값

    예제

    Example #1 Imagick::setProgressMonitor()

    <?php
            $abortReason     = null;
            
            try {
                    $imagick = new \Imagick(realpath($this->control->getImagePath()));
                    $startTime = time();

                    $callback = function ($offset, $span)  use ($startTime, &$abortReason) {
                    if (((    100 * $offset) / $span)  > 20) {
                            $abortReason = "Processing reached 20%";
                        return     false;
                    }

                        $nowTime = time();

                    if (    $nowTime - $startTime > 5) {
                            $abortReason = "Image processing took more than 5 seconds";
                        return     false;
                    }
                    if ((    $offset % 5) == 0) {
                        echo     "Progress: $offset / $span <br/>";
                    }
                    return     true;
                };

                    $imagick->setProgressMonitor($callback);

                    $imagick->waveImage(2, 15);

                echo     "Data len is: ".strlen($imagick->getImageBlob());
            }
            catch(\    ImagickException $e) {
                if (    $abortReason != null) {
                    echo     "Image processing was aborted: ".$abortReason."<br/>";
                }
                else {
                    echo     "ImagickException caught: ".$e->getMessage()." Exception type is ".get_class($e);
                }
            }

    ?>

    add a note add a note

    User Contributed Notes

    There are no user contributed notes for this page.
    To Top