array_intersect_key

Exemple

Exemple 1

Comparez les noms de clés de deux tableaux et renvoyez l'intersection:

 <span class="token php language-php"><span class="token delimiter important"><? Php</span>
<span class="token variable">$ a1</span> <span class="token operator">=</span> <span class="token keyword">array</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"a"</span> <span class="token operator">=></span> <span class="token string double-quoted-string">"red"</span> <span class="token punctuation">,</span> <span class="token string double-quoted-string">"b"</span> <span class="token operator">=></span> <span class="token string double-quoted-string">"vert"</span> <span class="token punctuation">,</span> <span class="token string double-quoted-string">"c"</span> <span class="token operator">=></span> <span class="token string double-quoted-string">"bleu"</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span>
<span class="token variable">$ a2</span> <span class="token operator">=</span> <span class="token keyword">array</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"a"</span> <span class="token operator">=></span> <span class="token string double-quoted-string">"red"</span> <span class="token punctuation">,</span> <span class="token string double-quoted-string">"c"</span> <span class="token operator">=></span> <span class="token string double-quoted-string">"bleu"</span> <span class="token punctuation">,</span> <span class="token string double-quoted-string">"d"</span> <span class="token operator">=></span> <span class="token string double-quoted-string">"rose"</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span>

<span class="token variable">$ résultat</span> <span class="token operator">=</span><span class="token function"></span></span><mark> <span class="token function">array_INTERSECT_KEY</span> <span class="token punctuation">(</span> <span class="token variable">$ A1</span> <span class="token punctuation">,</span> <span class="token variable">$ A2</span> <span class="token punctuation">)</span></mark><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 variable">$ result</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span>
<span class="token delimiter important">?></span>

Essayez-le vous-même

Exemple 2

Comparez les noms de clés de deux tableaux d'index et renvoyez l'intersection:

 <span class="token php language-php"><span class="token delimiter important"><? Php</span>
<span class="token variable">$ a1</span> <span class="token operator">=</span> <span class="token keyword">array</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"rouge"</span> <span class="token punctuation">,</span> <span class="token string double-quoted-string">"vert"</span> <span class="token punctuation">,</span> <span class="token string double-quoted-string">"bleu"</span> <span class="token punctuation">,</span> <span class="token string double-quoted-string">"jaune"</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span>
<span class="token variable">$ a2</span> <span class="token operator">=</span> <span class="token keyword">array</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"rouge"</span> <span class="token punctuation">,</span> <span class="token string double-quoted-string">"vert"</span> <span class="token punctuation">,</span> <span class="token string double-quoted-string">"bleu"</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span>

<span class="token variable">$ résultat</span> <span class="token operator">=</span><span class="token function"></span></span><mark> <span class="token function">array_INTERSECT_KEY</span> <span class="token punctuation">(</span> <span class="token variable">$ A1</span> <span class="token punctuation">,</span> <span class="token variable">$ A2</span> <span class="token punctuation">)</span></mark><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 variable">$ result</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span>
<span class="token delimiter important">?></span>

Essayez-le vous-même

Exemple 3

Comparez les noms clés de trois tableaux et renvoyez l'intersection:

 <span class="token php language-php"><span class="token delimiter important"><? Php</span>
<span class="token variable">$ a1</span> <span class="token operator">=</span> <span class="token keyword">array</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"a"</span> <span class="token operator">=></span> <span class="token string double-quoted-string">"red"</span> <span class="token punctuation">,</span> <span class="token string double-quoted-string">"b"</span> <span class="token operator">=></span> <span class="token string double-quoted-string">"vert"</span> <span class="token punctuation">,</span> <span class="token string double-quoted-string">"c"</span> <span class="token operator">=></span> <span class="token string double-quoted-string">"bleu"</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span>
<span class="token variable">$ a2</span> <span class="token operator">=</span> <span class="token keyword">array</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"c"</span> <span class="token operator">=></span> <span class="token string double-quoted-string">"jaune"</span> <span class="token punctuation">,</span> <span class="token string double-quoted-string">"d"</span> <span class="token operator">=></span> <span class="token string double-quoted-string">"noir"</span> <span class="token punctuation">,</span> <span class="token string double-quoted-string">"e"</span> <span class="token operator">=></span> <span class="token string double-quoted-string">"brun"</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span>
<span class="token variable">$ a3</span> <span class="token operator">=</span> <span class="token keyword">array</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"f"</span> <span class="token operator">=></span> <span class="token string double-quoted-string">"vert"</span> <span class="token punctuation">,</span> <span class="token string double-quoted-string">"c"</span> <span class="token operator">=></span> <span class="token string double-quoted-string">"violet"</span> <span class="token punctuation">,</span> <span class="token string double-quoted-string">"g"</span> <span class="token operator">=></span> <span class="token string double-quoted-string">"red"</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span>

<span class="token variable">$ résultat</span> <span class="token operator">=</span><span class="token function"></span></span><mark> <span class="token function">Array_INTERSECT_KEY</span> <span class="token punctuation">(</span> <span class="token variable">$ A1</span> <span class="token punctuation">,</span> <span class="token variable">$ A2</span> <span class="token punctuation">,</span> <span class="token variable">$ A3</span> <span class="token punctuation">)</span></mark><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 variable">$ result</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span>
<span class="token delimiter important">?></span>

Essayez-le vous-même