Description:
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Imagick does not play nice with locales that use comma as a decimal separator.

Reproduce code:
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setlocale(LC_ALL, "nl_NL");
$im = new Imagick();
$im->newImage(200, 300, "white", "png");
$draw = new ImagickDraw();
$draw->line(1.1, 2.1, 5.1, 3.6);
$im->drawImage($draw);

Expected result:
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A line.

Actual result:
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Error: Non-conforming drawing primitive definition `,'