prev
配列の内側のポインターを1つに戻します
日本語
日本語
現在の要素、次の要素、および配列の前の要素の値を出力します。
<span class="token php language-php"><span class="token delimiter important"><？php</span> <span class="token variable">$ People</span> <span class="token operator">=</span> <span class="token keyword">array</span> <span class="token punctuation">（</span> <span class="token string double-quoted-string">"Bill"</span> <span class="token punctuation">、</span> <span class="token string double-quoted-string">"Steve"</span> <span class="token punctuation">、</span> <span class="token string double-quoted-string">"Mark"</span> <span class="token punctuation">、</span> <span class="token string double-quoted-string">"David"</span> <span class="token punctuation">）</span> <span class="token punctuation">;</span> <span class="token keyword">エコー</span><span class="token function">電流</span><span class="token punctuation">（</span> <span class="token variable">$人</span><span class="token punctuation">）</span> <span class="token operator">。</span> <span class="token string double-quoted-string">"<br>"</span> <span class="token punctuation">;</span> <span class="token keyword">Echo</span> <span class="token function">Next</span> <span class="token punctuation">（</span> <span class="token variable">$ People</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 keyword">エコー</span><span class="token function"></span></span><mark><span class="token function">prev</span> <span class="token punctuation">（</span> <span class="token variable">$ people</span> <span class="token punctuation">）</span></mark><span class="token punctuation"></span> <span class="token punctuation">;</span> <span class="token delimiter important">？></span>
関連するすべての方法を実証します：
<span class="token php language-php"><span class="token delimiter important"><？php</span> <span class="token variable">$ People</span> <span class="token operator">=</span> <span class="token keyword">array</span> <span class="token punctuation">（</span> <span class="token string double-quoted-string">"Bill"</span> <span class="token punctuation">、</span> <span class="token string double-quoted-string">"Steve"</span> <span class="token punctuation">、</span> <span class="token string double-quoted-string">"Mark"</span> <span class="token punctuation">、</span> <span class="token string double-quoted-string">"David"</span> <span class="token punctuation">）</span> <span class="token punctuation">;</span> <span class="token keyword">エコー</span><span class="token function">電流</span><span class="token punctuation">（</span> <span class="token variable">$人</span><span class="token punctuation">）</span> <span class="token operator">。</span> <span class="token string double-quoted-string">"<br>"</span> <span class="token punctuation">;</span> <span class="token comment">//現在の要素は請求書です</span> <span class="token keyword">Echo</span> <span class="token function">Next</span> <span class="token punctuation">（</span> <span class="token variable">$ People</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 comment">//法案の次の要素はスティーブです</span> <span class="token keyword">エコー</span><span class="token function">電流</span><span class="token punctuation">（</span> <span class="token variable">$人</span><span class="token punctuation">）</span> <span class="token operator">。</span> <span class="token string double-quoted-string">"<br>"</span> <span class="token punctuation">;</span> <span class="token comment">//現在の要素は今スティーブです</span> <span class="token keyword">エコー</span><span class="token function"></span></span><mark><span class="token function">prev</span> <span class="token punctuation">（</span> <span class="token variable">$ people</span> <span class="token punctuation">）</span></mark><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 comment">//スティーブの前の要素はビルです</span> <span class="token keyword">エコー</span><span class="token function">エンド</span><span class="token punctuation">（</span> <span class="token variable">$人</span><span class="token punctuation">）</span> <span class="token operator">。</span> <span class="token string double-quoted-string">"<br>"</span> <span class="token punctuation">;</span> <span class="token comment">//最後の要素はDavidです</span> <span class="token keyword">エコー</span><span class="token function"></span><mark><span class="token function">prev</span> <span class="token punctuation">（</span> <span class="token variable">$ people</span> <span class="token punctuation">）</span></mark><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 comment">//デビッドの前の要素はマークです</span> <span class="token keyword">エコー</span><span class="token function">電流</span><span class="token punctuation">（</span> <span class="token variable">$人</span><span class="token punctuation">）</span> <span class="token operator">。</span> <span class="token string double-quoted-string">"<br>"</span> <span class="token punctuation">;</span> <span class="token comment">//現在の現在の要素はマークです</span> <span class="token keyword">エコー</span><span class="token function">リセット</span><span class="token punctuation">（</span> <span class="token variable">$人</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 comment">//内部ポインターを配列の最初の要素に移動します。</span> <span class="token keyword">Echo</span> <span class="token function">Next</span> <span class="token punctuation">（</span> <span class="token variable">$ People</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 comment">//法案の次の要素はスティーブです</span> <span class="token function">print_r</span> <span class="token punctuation">（</span><span class="token function">それぞれ</span><span class="token punctuation">（</span> <span class="token variable">$ people</span> <span class="token punctuation">）</span> <span class="token punctuation">）</span> <span class="token punctuation">;</span> <span class="token comment">//現在の要素（現在のスティーブ）のキー名とキー値を返し、内部ポインターを前方に移動します</span> <span class="token delimiter important">？></span>
each
rsort
natcasesort
array_udiff_uassoc
extract
sizeof
array_intersect_uassoc
key
