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"><?</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">"<br />"</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">?></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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