gettype

Exemple

Renvoie les types de différentes variables:

 <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 number">3</span> <span class="token punctuation">;</span>
<span class="token keyword">Echo</span> <span class="token function">GetType</span> <span class="token punctuation">(</span> <span class="token variable">$ a</span> <span class="token punctuation">)</span> <span class="token operator">.</span> <span class="token string double-quoted-string">"<br>"</span> <span class="token punctuation">;</span>

<span class="token variable">$ b</span> <span class="token operator">=</span> <span class="token number">3,2</span> <span class="token punctuation">;</span>
<span class="token keyword">Echo</span> <span class="token function">GetType</span> <span class="token punctuation">(</span> <span class="token variable">$ b</span> <span class="token punctuation">)</span> <span class="token operator">.</span> <span class="token string double-quoted-string">"<br>"</span> <span class="token punctuation">;</span>

<span class="token variable">$ c</span> <span class="token operator">=</span> <span class="token string double-quoted-string">"bonjour"</span> <span class="token punctuation">;</span>
<span class="token keyword">Echo</span> <span class="token function">GetType</span> <span class="token punctuation">(</span> <span class="token variable">$ C</span> <span class="token punctuation">)</span> <span class="token operator">.</span> <span class="token string double-quoted-string">"<br>"</span> <span class="token punctuation">;</span>

<span class="token variable">$ d</span> <span class="token operator">=</span> <span class="token keyword">array</span> <span class="token punctuation">(</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span>
<span class="token keyword">Echo</span> <span class="token function">GetType</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>"</span> <span class="token punctuation">;</span>

<span class="token variable">$ e</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 keyword">Echo</span> <span class="token function">GetType</span> <span class="token punctuation">(</span> <span class="token variable">$ E</span> <span class="token punctuation">)</span> <span class="token operator">.</span> <span class="token string double-quoted-string">"<br>"</span> <span class="token punctuation">;</span>

<span class="token variable">$ f</span> <span class="token operator">=</span> <span class="token constant">null</span> <span class="token punctuation">;</span>
<span class="token keyword">Echo</span> <span class="token function">GetType</span> <span class="token punctuation">(</span> <span class="token variable">$ f</span> <span class="token punctuation">)</span> <span class="token operator">.</span> <span class="token string double-quoted-string">"<br>"</span> <span class="token punctuation">;</span>

<span class="token variable">$ g</span> <span class="token operator">=</span> <span class="token constant boolean">false</span> <span class="token punctuation">;</span>
<span class="token keyword">Echo</span> <span class="token function">GetType</span> <span class="token punctuation">(</span> <span class="token variable">$ g</span> <span class="token punctuation">)</span> <span class="token operator">.</span> <span class="token string double-quoted-string">"<br>"</span> <span class="token punctuation">;</span>
<span class="token delimiter important">?></span></span>

Essayez-le vous-même

Exemple d'explication:

gettype() est utilisée pour vérifier différents types de variables (intégrale, point flottante, chaîne, tableau, nul et booléen) et renvoyer leurs types. Par exemple, pour la variable entière $a , gettype($a) renverra la chaîne "integer" . Pour la variable de point flottante $b il renverra "double" , pour la variable de chaîne $c il renverra "string" , et ainsi de suite. Si la variable est une ressource fermée, dans PHP 7.2 et ultérieurement, gettype() renvoie "resource (closed)" et dans les versions antérieures, il pourrait renvoyer "unknown type" .