PHP Manual
CairoFormat
Provides an appropriate stride to use

CairoFormat::strideForWidth

(PECL cairo >= 0.1.0)

CairoFormat::strideForWidth — Provides an appropriate stride to use

说明

public static CairoFormat::strideForWidth ( int $format , int $width ) : int

This method provides a stride value that will respect all alignment requirements of the accelerated image-rendering code within cairo.

参数

format: The desired CairoFormat to use
width: The width of the image

返回值

The appropriate stride to use given the desired format and width, or -1 if either the format is invalid or the width too large.

范例

Example #1 CairoFormat::strideForWidth() example

 <?php
/* ... */
?>

以上例程的输出类似于：

...

参见

Classname::Method()

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