PHP | Imagick setFirstIterator() function
Last Updated :
17 Dec, 2019
The Imagick::setFirstIterator() function is an inbuilt function in PHP which is used to set the Imagick iterator to the first image.
Syntax:
bool Imagick::setFirstIterator( void )
Parameters: This function doesn’t accept any parameter.
Return Value: This function returns TRUE on success.
Exceptions: This function throws ImagickException on error.
Below given programs illustrate the Imagick::setFirstIterator() function in PHP:
Program 1:
<?php
$imagick = new Imagick(
$imagick ->addImage( new Imagick(
echo 'Index before setFirstIterator(); is '
. $imagick ->getIteratorIndex()
. '<br>' ;
$imagick ->setFirstIterator();
echo 'Index after setFirstIterator(); is '
. $imagick ->getIteratorIndex()
. '<br>' ;
?>
|
Output:
Index before setFirstIterator(); is 1
Index after setFirstIterator(); is 0
Program 2:
<?php
$imagick = new Imagick();
$images = [
];
$imagick ->readImages( $images );
echo 'Index before setFirstIterator(); is '
. $imagick ->getIteratorIndex()
. '<br>' ;
$imagick ->setFirstIterator();
echo 'Index after setFirstIterator(); is '
. $imagick ->getIteratorIndex()
. '<br>' ;
?>
|
Output:
Index before setFirstIterator(); is 2
Index after setFirstIterator(); is 0
Reference: https://www.php.net/manual/en/imagick.setfirstiterator.php
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