Question

I m 采用imagettftext() 书写图像动态文字,我希望它符合我的形象。

我如何用文字透镜计算体积?

Answer 1

You can calculate the bounding box of TTF text before outputting it with the imagettfbbox function. Unfortunately there is no direct way of scaling to fit a width, so you ll have to do it yourself.

这样做的一种办法是,将案文与默认的字体尺寸(如20)至<条形状>。那么,你就可以计算比额表系数,从而计算出案文应如何缩小或扩大,以适应你想要的大小:

scale = targetWidth / bboxWidth;

Then draw the text with the proper size:

fontSize = 20 * scale;

using the imagettftext function. Fonts don t scale 100% perfectly this way, but you ll get a very good approximation.

见imagettf Box here 。

Answer 2

while (itsTooBigAccordingToimagettftext() && $fontSize > 0) {
    $fontSize--;
}

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