array_keys

အမည်:array_keys

အမျိုးအစား:အခင်းအကျင်း

programming language:php

တစ်ကြောင်းဖြင့်အကျဉ်းချုပ်:ခင်းကျင်းအတွင်းရှိအဓိကအမည်များအားလုံးကိုပြန်ပို့သည်။

နမူနာ

ဥပမာ 1

ခင်းကျင်းအတွင်းရှိသော့ချက်အမည်များအားလုံးပါ 0 င်သည့် array အသစ်တစ်ခုကိုပြန်လည်ရောက်ရှိ

 <span class="token php language-php"><span class="token delimiter important"><? PHP</span>
<span class="token variable">$a</span> <span class="token operator">=</span> <span class="token keyword">array</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"Volvo"</span> <span class="token operator">=></span> <span class="token string double-quoted-string">"XC90"</span> <span class="token punctuation">,</span> <span class="token string double-quoted-string">"BMW"</span> <span class="token operator">=></span> <span class="token string double-quoted-string">"X5"</span> <span class="token punctuation">,</span> <span class="token string double-quoted-string">"Toyota"</span> <span class="token operator">=></span> <span class="token string double-quoted-string">"Highlander"</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span>
<span class="token function">print_r</span> <span class="token punctuation">(</span><span class="token function"></span></span><mark> <span class="token function">array_keys</span> <span class="token punctuation">(</span> <span class="token variable">$ a</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 delimiter important">></span>

သင်ကိုယ်တိုင်စမ်းကြည့်ပါ

ဥပမာ 2

တန်ဖိုး parameter ကိုသုံးပါ။

 <span class="token php language-php"><span class="token delimiter important"><? PHP</span>
<span class="token variable">$a</span> <span class="token operator">=</span> <span class="token keyword">array</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"Volvo"</span> <span class="token operator">=></span> <span class="token string double-quoted-string">"XC90"</span> <span class="token punctuation">,</span> <span class="token string double-quoted-string">"BMW"</span> <span class="token operator">=></span> <span class="token string double-quoted-string">"X5"</span> <span class="token punctuation">,</span> <span class="token string double-quoted-string">"Toyota"</span> <span class="token operator">=></span> <span class="token string double-quoted-string">"Highlander"</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span>
<span class="token function">print_r</span> <span class="token punctuation">(</span><span class="token function"></span></span><mark> <span class="token function">array_keys</span> <span class="token punctuation">(</span> <span class="token variable">$ a</span> <span class="token punctuation">,</span> <span class="token string double-quoted-string">Highlander "</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 delimiter important">></span>

သင်ကိုယ်တိုင်စမ်းကြည့်ပါ

ဥပမာ 3

တင်းကျပ်သော parameter သည် (မှားယွင်းသော) ကိုသုံးပါ။

 <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 keyword">Array</span> <span class="token punctuation">(</span> <span class="token number">10</span> <span class="token punctuation">,</span> <span class="token number">20</span> <span class="token punctuation">,</span> <span class="token number">30, 30</span> <span class="token punctuation">,</span> <span class="token string double-quoted-string">"10</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span>
<span class="token function">print_r</span> <span class="token punctuation">(</span><span class="token function"></span></span><mark> <span class="token function">array_keys</span> <span class="token punctuation">(</span> <span class="token variable">$ a</span> <span class="token punctuation">,</span> <span class="token string double-quoted-string">"10"</span> <span class="token punctuation">,</span> <span class="token constant boolean">false</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 delimiter important">></span>

သင်ကိုယ်တိုင်စမ်းကြည့်ပါ

ဥပမာ 4

တင်းကျပ်သော parameter ကိုသုံးပါ။

 <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 keyword">Array</span> <span class="token punctuation">(</span> <span class="token number">10</span> <span class="token punctuation">,</span> <span class="token number">20</span> <span class="token punctuation">,</span> <span class="token number">30, 30</span> <span class="token punctuation">,</span> <span class="token string double-quoted-string">"10</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span>
<span class="token function">print_r</span> <span class="token punctuation">(</span><span class="token function"></span></span><mark> <span class="token function">array_keys</span> <span class="token punctuation">(</span> <span class="token variable">$ a</span> <span class="token punctuation">,</span> <span class="token string double-quoted-string">"10"</span> <span class="token punctuation">,</span> <span class="token constant boolean">စစ်မှန်သော</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 delimiter important">></span>

သင်ကိုယ်တိုင်စမ်းကြည့်ပါ

ဆက်စပ်အကြောင်းအရာ