reset

Example

Example 1

Output the values of the current element and the next element in the array, and reset the internal pointer of the array to the first element in the array:

 <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">echo</span> <span class="token function">current</span> <span class="token punctuation">(</span> <span class="token variable">$people</span> <span class="token punctuation">)</span> <span class="token operator">.</span> <span class="token string double-quoted-string">"<br>"</span> <span class="token punctuation">;</span>
<span class="token keyword">echo</span> <span class="token function">next</span> <span class="token punctuation">(</span> <span class="token variable">$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">echo</span><span class="token function"></span></span><mark> <span class="token function">reset</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>

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Example 2

Demonstrate all related methods:

 <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">echo</span> <span class="token function">current</span> <span class="token punctuation">(</span> <span class="token variable">$people</span> <span class="token punctuation">)</span> <span class="token operator">.</span> <span class="token string double-quoted-string">"<br>"</span> <span class="token punctuation">;</span> <span class="token comment">// The current element is Bill</span>
<span class="token keyword">echo</span> <span class="token function">next</span> <span class="token punctuation">(</span> <span class="token variable">$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">// The next element of Bill is Steve</span>
<span class="token keyword">echo</span> <span class="token function">current</span> <span class="token punctuation">(</span> <span class="token variable">$people</span> <span class="token punctuation">)</span> <span class="token operator">.</span> <span class="token string double-quoted-string">"<br>"</span> <span class="token punctuation">;</span> <span class="token comment">// The current element is Steve now</span>
<span class="token keyword">echo</span> <span class="token function">prev</span> <span class="token punctuation">(</span> <span class="token variable">$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">// The previous element of Steve is Bill</span>
<span class="token keyword">echo</span> <span class="token function">end</span> <span class="token punctuation">(</span> <span class="token variable">$people</span> <span class="token punctuation">)</span> <span class="token operator">.</span> <span class="token string double-quoted-string">"<br>"</span> <span class="token punctuation">;</span> <span class="token comment">// The last element is David</span>
<span class="token keyword">echo</span> <span class="token function">prev</span> <span class="token punctuation">(</span> <span class="token variable">$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">// The element before David is Mark</span>
<span class="token keyword">echo</span> <span class="token function">current</span> <span class="token punctuation">(</span> <span class="token variable">$people</span> <span class="token punctuation">)</span> <span class="token operator">.</span> <span class="token string double-quoted-string">"<br>"</span> <span class="token punctuation">;</span> <span class="token comment">// The current current element is Mark</span>
<span class="token keyword">echo</span><span class="token function"></span></span><mark> <span class="token function">reset</span> <span class="token punctuation">(</span> <span class="token variable">$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">// Move the internal pointer to the first element of the array, i.e. Bill</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">// The next element of Bill is Steve</span>

<span class="token function">print_r</span> <span class="token punctuation">(</span> <span class="token function">each</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">// Returns the key name and key value of the current element (currently Steve) and moves the internal pointer forward</span>
<span class="token delimiter important">?></span>

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