unset
주어진 변수를 자유롭게합니다
한국어
한국어
변수 파괴 :
<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 string double-quoted-string">"안녕하세요!"</span> <span class="token punctuation">;</span> <span class="token keyword">echo</span> <span class="token string double-quoted-string">"이전 변수 'a'의 값을 삭제하십시오</span> <span class="token operator">.</span> <span class="token variable">$ a</span> <span class="token operator">.</span> <span class="token string double-quoted-string">"<br>"</span> <span class="token punctuation">;</span> <span class="token keyword">비 세트</span> <span class="token punctuation">(</span> <span class="token variable">$ a</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span> <span class="token keyword">Echo</span> <span class="token string double-quoted-string">"삭제 후 변수 'a'의 값 :"</span> <span class="token operator">.</span> <span class="token variable">$ a</span> <span class="token punctuation">;</span> <span class="token delimiter important">?></span></span>
is_null
is_object
is_integer
unset
is_string
gettype
get_resource_id
floatval
