array_keys
Renvoie certains ou tous les noms clés du tableau
Français
Français
Renvoie un nouveau tableau contenant tous les noms de clés 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 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>
Utilisez le paramètre de valeur :
<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>
Utilisez un paramètre strict (false):
<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">tableau</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</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>
Utilisez un paramètre strict (true):
<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">tableau</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</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">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 delimiter important">?></span>
end
array_merge
pos
array_reverse
array_key_exists
krsort
array_multisort
array_diff_assoc