filter_var
使用特定的过滤器过滤一个变量
简体中文
简体中文
<span class="token php language-php"><span class="token delimiter important"><?php</span> <span class="token keyword">if</span><span class="token punctuation">(</span><span class="token operator">!</span><span class="token function"></span><mark><span class="token function">filter_var</span><span class="token punctuation">(</span><span class="token string double-quoted-string">"[email protected]"</span><span class="token punctuation">,</span> <span class="token constant">FILTER_VALIDATE_EMAIL</span><span class="token punctuation">)</span></mark><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">"E-mail is not valid"</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">"E-mail is valid"</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token punctuation">}</span> <span class="token delimiter important">?></span></span>
输出类似：
E-mail is not valid
filter_id
filter_var_array
filter_input_array
filter_list
filter_var
filter_has_var
filter_input
