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(PECL ps >= 1.1.0)
ps_show_xy — Output text at given position
$psdoc
, string $text
, float $x
, float $y
)Output a text at the given text position.
psdoc Resource identifier of the postscript file as returned by ps_new() .
text The text to be output.
x x-coordinate of the lower left corner of the box surrounding the text.
y y-coordinate of the lower left corner of the box surrounding the text.
成功时返回 TRUE , 或者在失败时返回 FALSE 。