array_key_exists
Vérifiez s'il existe un nom ou un index spécifié dans le tableau
Français
Français
Vérifiez si le nom de clé "Volvo" existe dans le tableau:
<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 punctuation">;</span>
<span class="token keyword">si</span> <span class="token punctuation">(</span><span class="token function"></span></span><mark> <span class="token function">array_key_exists</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"Volvo"</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 keyword">Echo</span> <span class="token string double-quoted-string">"La clé existe!"</span> <span class="token punctuation">;</span>
<span class="token punctuation">}</span>
<span class="token keyword">autre</span>
<span class="token punctuation">{</span>
<span class="token keyword">Echo</span> <span class="token string double-quoted-string">"La clé n'existe pas!"</span> <span class="token punctuation">;</span>
<span class="token punctuation">}</span>
<span class="token delimiter important">?></span>
Vérifiez si le nom de clé "Toyota" existe dans le tableau:
<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 punctuation">;</span>
<span class="token keyword">si</span> <span class="token punctuation">(</span><span class="token function"></span></span><mark> <span class="token function">key_exists</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"Toyota"</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 keyword">Echo</span> <span class="token string double-quoted-string">"La clé existe!"</span> <span class="token punctuation">;</span>
<span class="token punctuation">}</span>
<span class="token keyword">autre</span>
<span class="token punctuation">{</span>
<span class="token keyword">Echo</span> <span class="token string double-quoted-string">"La clé n'existe pas!"</span> <span class="token punctuation">;</span>
<span class="token punctuation">}</span>
<span class="token delimiter important">?></span>
Vérifiez si le nom de clé entier "0" existe dans le tableau:
<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 punctuation">,</span> <span class="token string double-quoted-string">"bmw"</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span>
<span class="token keyword">si</span> <span class="token punctuation">(</span><span class="token function"></span></span><mark> <span class="token function">array_key_exists</span> <span class="token punctuation">(</span> <span class="token number">0</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 keyword">Echo</span> <span class="token string double-quoted-string">"La clé existe!"</span> <span class="token punctuation">;</span>
<span class="token punctuation">}</span>
<span class="token keyword">autre</span>
<span class="token punctuation">{</span>
<span class="token keyword">Echo</span> <span class="token string double-quoted-string">"La clé n'existe pas!"</span> <span class="token punctuation">;</span>
<span class="token punctuation">}</span>
<span class="token delimiter important">?></span>
array_reverse
array_reduce
array_intersect_uassoc
reset
array_rand
array_fill_keys
array_intersect_ukey
krsort
