rad2deg

实例

<span class="token php language-php"><span class="token delimiter important"><?php</span>
<span class="token variable">$rad</span> <span class="token operator">=</span> <span class="token constant">M_PI</span><span class="token punctuation">;</span>
<span class="token variable">$deg</span> <span class="token operator">=</span> <span class="token function">rad2deg</span><span class="token punctuation">(</span><span class="token variable">$rad</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token keyword">echo</span> <span class="token string double-quoted-string">"<span class="token interpolation"><span class="token variable">$rad</span></span> radians is equal to <span class="token interpolation"><span class="token variable">$deg</span></span> degrees"</span><span class="token punctuation">;</span>
<span class="token delimiter important">?></span></span>

亲自试一试