(PECL cairo >= 0.1.0)
CairoFormat::strideForWidth — Provides an appropriate stride to use
$format
, int $width
) : intThis method provides a stride value that will respect all alignment requirements of the accelerated image-rendering code within cairo.
The appropriate stride to use given the desired format and width, or -1 if either the format is invalid or the width too large.
例1 CairoFormat::strideForWidth() example
<?php
/* ... */
?>
上の例の出力は、 たとえば以下のようになります。
...