International PHP Conference 2015

ImagickPixelIterator::__construct

(PECL imagick 2.0.0)

ImagickPixelIterator::__constructThe ImagickPixelIterator constructor

Description

ImagickPixelIterator::__construct ( Imagick $wand )
Warning

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

The ImagickPixelIterator constructor

Return Values

Returns TRUE on success.

Examples

Example #1 ImagickPixelIterator::construct()

<?php
function construct($imagePath) {
    
$imagick = new \Imagick(realpath($imagePath));
    
$imageIterator = new \ImagickPixelIterator($imagick);

    
/* Loop through 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) {
                
/* 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();
    }

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

?>

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