imagesx() 函数用于获取图像的宽度，单位为像素，返回值为整型。

语法：

<span class="kwd">int</span><span class="pln"> imagesx</span><span class="pun">(</span><span class="pln"> resource image </span><span class="pun">)</span>

参数 image 为如 imagecreatetruecolor()、imagecreatefromjpeg() 等函数返回的图像资源。

PHP 获取图像高度函数：imagesy()

imagesy() 函数用于获取图像的高度，语法及用法同 imagesx() 。

语法：

<span class="kwd">int</span><span class="pln"> imagesy</span><span class="pun">(</span><span class="pln"> resource image </span><span class="pun">)</span>

参数 image 为如 imagecreatetruecolor()、imagecreatefromjpeg() 等函数返回的图像资源。

实例：

<span class="pun">&lt;?</span><span class="pln">php

$img </span><span class="pun">=</span><span class="pln"> imagecreatefrompng</span><span class="pun">(</span><span class="str">"runoob-logo.png"</span><span class="pun">);</span><span class="pln">

echo </span><span class="str">"图像宽度："</span><span class="pun">,</span><span class="pln">imagesx</span><span class="pun">(</span><span class="pln"> $img </span><span class="pun">),</span><span class="str">"&lt;br /&gt;"</span><span class="pun">;</span><span class="pln">

echo </span><span class="str">"图像高度："</span><span class="pun">,</span><span class="pln">imagesy</span><span class="pun">(</span><span class="pln"> $img </span><span class="pun">);</span>

<span class="pun">?&gt;</span>

浏览器输出：

<span class="pun">图像宽度：</span><span class="lit">290</span>

<span class="pun">图像高度：</span><span class="lit">69</span>

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