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PHP Imagick setIteratorIndex () function

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Syntax:
bool Imagick::setIteratorIndex (int $index)
Parameters:This function takes one parameter $index,which contains the index.Return Value:This function returns TRUE in on success.Exceptions:This function throws an ImagickException on error.The programs below illustrate the Imagick::setIteratorIndex() function in PHP:Program 1:  
// Create a new imagick object $imagick = new Imagick ( https://media.engineerforengineer.org/wp-content/uploads/20190918234528 /colorize1.png );  
// Add two more images to the same imagick object $imagick -> addImage ( new Imagick ( https://media.engineerforengineer.org/wp-content/uploads/engineerforengineer-13.png ));  
// The cursor is currently at 1
// Set index to 0 $imagick -> setIteratorIndex (0);  
// getImageBlob should show the last added image, but
// cursor is set to 0 so it shows the first image header ( "Content-Type: image / png" ); echo $imagick -> getImageBlob(); ?>
Output: Program 2: < tbody>  
// Create a new imagick object $imagick = new Imagick ( https://media.engineerforengineer.org/ wp-content / uploads / engineerforengineer-13.png );  
// Add two more images to the same imagick object $imagick -> addImage ( new Imagick ( https://media.engineerforengineer.org/wp-content/uploads/engineerforengineer-13.png )); $imagick -> addImage ( new Imagick ( https://media. engineerforengineer.org/wp-content/uploads/engineerforengineer-13.png ));  
// The cursor is currently at 2
// Set index to 1 $imagick -> setIteratorIndex (1);  
// Get index $index = $imagick -> getIteratorIndex(); echo $index ; ?>
Output:
1
Link: https://www .php.net / manual / en / imagick.setiteratorindex.php

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