in_array
检查数组中是否存在某个值
简体中文
简体中文
在数组中搜索值 "Glenn" ，并输出一些文本：
<span class="token php language-php"><span class="token delimiter important"><?php</span>
<span class="token variable">$people</span> <span class="token operator">=</span> <span class="token keyword">array</span><span class="token punctuation">(</span><span class="token string double-quoted-string">"Bill"</span><span class="token punctuation">,</span> <span class="token string double-quoted-string">"Steve"</span><span class="token punctuation">,</span> <span class="token string double-quoted-string">"Mark"</span><span class="token punctuation">,</span> <span class="token string double-quoted-string">"David"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token keyword">if</span> <span class="token punctuation">(</span><span class="token function"></span><mark><span class="token function">in_array</span><span class="token punctuation">(</span><span class="token string double-quoted-string">"Mark"</span><span class="token punctuation">,</span> <span class="token variable">$people</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 string double-quoted-string">"匹配已找到"</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 string double-quoted-string">"匹配未找到"</span><span class="token punctuation">;</span>
<span class="token punctuation">}</span>
<span class="token delimiter important">?></span></span>
使用所有参数：
<span class="token php language-php"><span class="token delimiter important"><?php</span>
<span class="token variable">$people</span> <span class="token operator">=</span> <span class="token keyword">array</span><span class="token punctuation">(</span><span class="token string double-quoted-string">"Bill"</span><span class="token punctuation">,</span> <span class="token string double-quoted-string">"Steve"</span><span class="token punctuation">,</span> <span class="token string double-quoted-string">"Mark"</span><span class="token punctuation">,</span> <span class="token string double-quoted-string">"David"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token keyword">if</span> <span class="token punctuation">(</span><span class="token function"></span><mark><span class="token function">in_array</span><span class="token punctuation">(</span><span class="token string double-quoted-string">"23"</span><span class="token punctuation">,</span> <span class="token variable">$people</span><span class="token punctuation">,</span> <span class="token constant boolean">TRUE</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 string double-quoted-string">"匹配已找到<br>"</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 string double-quoted-string">"匹配未找到<br>"</span><span class="token punctuation">;</span>
<span class="token punctuation">}</span>
<span class="token keyword">if</span> <span class="token punctuation">(</span><span class="token function">in_array</span><span class="token punctuation">(</span><span class="token string double-quoted-string">"Mark"</span><span class="token punctuation">,</span><span class="token variable">$people</span><span class="token punctuation">,</span> <span class="token constant boolean">TRUE</span><span class="token punctuation">)</span><span class="token punctuation">)</span>
<span class="token punctuation">{</span>
<span class="token keyword">echo</span> <span class="token string double-quoted-string">"匹配已找到<br>"</span><span class="token punctuation">;</span>
<span class="token punctuation">}</span>
<span class="token keyword">else</span>
<span class="token punctuation">{</span>
<span class="token keyword">echo</span> <span class="token string double-quoted-string">"匹配未找到<br>"</span><span class="token punctuation">;</span>
<span class="token punctuation">}</span>
<span class="token keyword">if</span> <span class="token punctuation">(</span><span class="token function">in_array</span><span class="token punctuation">(</span><span class="token number">23</span><span class="token punctuation">,</span><span class="token variable">$people</span><span class="token punctuation">,</span> <span class="token constant boolean">TRUE</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 string double-quoted-string">"匹配已找到<br>"</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 string double-quoted-string">"匹配未找到<br>"</span><span class="token punctuation">;</span>
<span class="token punctuation">}</span>
<span class="token delimiter important">?></span></span>
array_reverse
key_exists
array_map
array_column
array_unshift
array_key_last
array_udiff_assoc
in_array
