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111 lines
5.9 KiB
HTML
111 lines
5.9 KiB
HTML
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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<html>
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<head>
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<meta http-equiv="content-type" content="text/html; charset=UTF-8">
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<title>使用传递的数组替换第一个数组的元素</title>
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</head>
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<body class="docs"><div id="layout">
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<div id="layout-content"><div id="function.array-replace" class="refentry">
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<div class="refnamediv">
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<h1 class="refname">array_replace</h1>
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<p class="verinfo">(PHP 5 >= 5.3.0, PHP 7)</p><p class="refpurpose"><span class="refname">array_replace</span> — <span class="dc-title">使用传递的数组替换第一个数组的元素</span></p>
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</div>
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<div class="refsect1 description" id="refsect1-function.array-replace-description">
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<h3 class="title">说明</h3>
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<div class="methodsynopsis dc-description">
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<span class="methodname"><strong>array_replace</strong></span>
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( <span class="methodparam"><span class="type">array</span> <code class="parameter">$array1</code></span>
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[, <span class="methodparam"><span class="type">array</span> <code class="parameter">$...</code></span>
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] ) : <span class="type">array</span></div>
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<p class="para rdfs-comment">
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<span class="function"><strong>array_replace()</strong></span> 函数使用后面数组元素相同 key 的值替换 <code class="parameter">array1</code> 数组的值。如果一个键存在于第一个数组同时也存在于第二个数组，它的值将被第二个数组中的值替换。如果一个键存在于第二个数组，但是不存在于第一个数组，则会在第一个数组中创建这个元素。如果一个键仅存在于第一个数组，它将保持不变。如果传递了多个替换数组，它们将被按顺序依次处理，后面的数组将覆盖之前的值。
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</p>
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<p class="para">
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<span class="function"><strong>array_replace()</strong></span> 是非递归的：它将第一个数组的值进行替换而不管第二个数组中是什么类型。
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</p>
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</div>
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<div class="refsect1 parameters" id="refsect1-function.array-replace-parameters">
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<h3 class="title">参数</h3>
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<p class="para">
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<dl>
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<dt>
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<code class="parameter">array1</code></dt>
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<dd>
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<p class="para">
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替换该数组的值。
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</p>
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</dd>
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<dt>
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<code class="parameter">...</code></dt>
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<dd>
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<p class="para">
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包含要提取元素的数组。
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后面的数组里的值会覆盖前面的值。
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</p>
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</dd>
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</dl>
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</p>
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</div>
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<div class="refsect1 returnvalues" id="refsect1-function.array-replace-returnvalues">
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<h3 class="title">返回值</h3>
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<p class="para">
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返回一个<span class="type"><span class="type 数组">数组</span></span>。如果发生错误，将返回 <strong><code>NULL</code></strong>。
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</p>
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</div>
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<div class="refsect1 examples" id="refsect1-function.array-replace-examples">
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<h3 class="title">范例</h3>
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<p class="para">
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<div class="example" id="example-6062">
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<p><strong>Example #1 <span class="function"><strong>array_replace()</strong></span> 范例</strong></p>
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<div class="example-contents">
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<div class="phpcode"><pre><span style="color: #000000">
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<span style="color: #0000BB"><?php<br />$base </span><span style="color: #007700">= array(</span><span style="color: #DD0000">"orange"</span><span style="color: #007700">, </span><span style="color: #DD0000">"banana"</span><span style="color: #007700">, </span><span style="color: #DD0000">"apple"</span><span style="color: #007700">, </span><span style="color: #DD0000">"raspberry"</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$replacements </span><span style="color: #007700">= array(</span><span style="color: #0000BB">0 </span><span style="color: #007700">=> </span><span style="color: #DD0000">"pineapple"</span><span style="color: #007700">, </span><span style="color: #0000BB">4 </span><span style="color: #007700">=> </span><span style="color: #DD0000">"cherry"</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$replacements2 </span><span style="color: #007700">= array(</span><span style="color: #0000BB">0 </span><span style="color: #007700">=> </span><span style="color: #DD0000">"grape"</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">$basket </span><span style="color: #007700">= </span><span style="color: #0000BB">array_replace</span><span style="color: #007700">(</span><span style="color: #0000BB">$base</span><span style="color: #007700">, </span><span style="color: #0000BB">$replacements</span><span style="color: #007700">, </span><span style="color: #0000BB">$replacements2</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">print_r</span><span style="color: #007700">(</span><span style="color: #0000BB">$basket</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">?></span>
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</span>
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</pre></div>
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</div>
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<div class="example-contents"><p>以上例程会输出：</p></div>
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<div class="example-contents screen">
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<div class="cdata"><pre>
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Array
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(
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[0] => grape
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[1] => banana
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[2] => apple
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[3] => raspberry
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[4] => cherry
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)
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</pre></div>
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</div>
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</div>
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</p>
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</div>
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<div class="refsect1 seealso" id="refsect1-function.array-replace-seealso">
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<h3 class="title">参见</h3>
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<p class="para">
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<ul class="simplelist">
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<li class="member"><span class="function"><a href="array_replace_recursive.html" class="function" rel="rdfs-seeAlso">array_replace_recursive()</a> - 使用传递的数组递归替换第一个数组的元素</span></li>
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<li class="member"><span class="function"><a href="array_merge.html" class="function" rel="rdfs-seeAlso">array_merge()</a> - 合并一个或多个数组</span></li>
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</ul>
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</p>
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</div>
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</div></div></div></body></html> |