delete
参见 unlink() 或 unset()(PHP 没有 delete 关键词或函数)
<span class="token php language-php"><span class="token delimiter important"><?php</span> <span class="token variable">$file</span> <span class="token operator">=</span> <span class="token string double-quoted-string">"test.txt"</span><span class="token punctuation">;</span> <span class="token keyword">if</span> <span class="token punctuation">(</span><span class="token operator">!</span><span class="token function">unlink</span><span class="token punctuation">(</span><span class="token variable">$file</span><span class="token punctuation">)</span><span class="token punctuation">)</span> <span class="token punctuation">{</span> <span class="token keyword">echo</span> <span class="token punctuation">(</span><span class="token string double-quoted-string">"Error deleting <span class="token interpolation"><span class="token variable">$file</span></span>"</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token punctuation">}</span> <span class="token keyword">else</span> <span class="token punctuation">{</span> <span class="token keyword">echo</span> <span class="token punctuation">(</span><span class="token string double-quoted-string">"Deleted <span class="token interpolation"><span class="token variable">$file</span></span>"</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token punctuation">}</span> <span class="token delimiter important">?></span></span>