is_countable

နမူနာ

variable တစ်ခု၏အကြောင်းအရာသည်ရေတွက်နိုင်သောတန်ဖိုးကိုစစ်ဆေးပါ။

 <span class="token php language-php"><span class="token delimiter important"><? PHP</span>
<span class="token variable">$ a</span> <span class="token operator">=</span> <span class="token string double-quoted-string">"ဟဲလို"</span> <span class="token punctuation">;</span>
<span class="token keyword">ပဲ့တင်သံ</span> <span class="token string double-quoted-string">"a"</span> <span class="token operator">။</span> <span class="token function">is_countable</span> <span class="token punctuation">(</span> <span class="token variable">$ က</span> <span class="token punctuation">)</span> <span class="token operator">။</span> <span class="token string double-quoted-string">"<br> <br>"</span> <span class="token punctuation">;</span>

<span class="token variable">$ B</span> <span class="token operator">=</span> <span class="token keyword">Array</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">Green "</span> <span class="token punctuation">,</span> <span class="token string double-quoted-string">" Green "</span> <span class="token punctuation">,</span> <span class="token string double-quoted-string">" Blue "</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span>
<span class="token keyword">ပဲ့တင်သံ</span> <span class="token string double-quoted-string">"B"</span> <span class="token operator">။</span> <span class="token function">is_countable</span> <span class="token punctuation">(</span> <span class="token variable">$ ခ</span> <span class="token punctuation">)</span> <span class="token operator">။</span> <span class="token string double-quoted-string">"<br> <br>"</span> <span class="token punctuation">;</span>

<span class="token variable">$ c</span> <span class="token operator">=</span> <span class="token keyword">array</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"Peter"</span> <span class="token operator">= >></span> <span class="token string double-quoted-string">"35"</span> <span class="token punctuation">,</span> <span class="token string double-quoted-string">"Ben"</span> <span class="token operator">=></span> <span class="token string double-quoted-string">"37"</span> <span class="token punctuation">,</span> <span class="token string double-quoted-string">"Joe" => "Joe"</span> <span class="token punctuation">=</span> <span class="token operator">></span> <span class="token string double-quoted-string">"43</span> <span class="token punctuation">"</span>
<span class="token keyword">ပဲ့တင်သံ</span> <span class="token string double-quoted-string">"C သည်" ဖြစ်သည်</span> <span class="token operator">။</span> <span class="token function">is_countable</span> <span class="token punctuation">(</span> <span class="token variable">$ ဂ</span> <span class="token punctuation">)</span> <span class="token operator">။</span> <span class="token string double-quoted-string">"<br> <br>"</span> <span class="token punctuation">;</span>

<span class="token variable">$ d</span> <span class="token operator">=</span> <span class="token punctuation">[</span> <span class="token number">1</span> <span class="token punctuation">,</span> <span class="token number">2</span> <span class="token punctuation">,</span> <span class="token number">3</span> <span class="token punctuation">]</span> <span class="token punctuation">;</span>
<span class="token keyword">echo</span> <span class="token string double-quoted-string">"d is"</span> <span class="token operator">။</span> <span class="token function">is_countable</span> <span class="token punctuation">(</span> <span class="token variable">$ d</span> <span class="token punctuation">)</span> <span class="token operator">။</span> <span class="token string double-quoted-string">"<br> <br>"</span> <span class="token punctuation">;</span>
<span class="token delimiter important">></span></span>

သင်ကိုယ်တိုင်စမ်းကြည့်ပါ

ဥပမာရှင်းလင်းချက်:

$a တွင် is_countable($a) တန်ဖိုးမရှိတဲ့ string တစ်ခုပါ FALSE င်သည်။ Variables $b , $c နှင့် $d is_countable($c) ရေတွက် is_countable($b) တန်ဖိုးများဖြစ်သော arrays များပါ TRUE သည် is_countable($d) Arrays များသည် index array သို့မဟုတ် associative Arrays များဖြစ်သည်။