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85 lines
11 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>Returns the auto generated id used in the last query</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.maxdb-insert-id" class="refentry">
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<div class="refnamediv">
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<h1 class="refname">maxdb_insert_id</h1>
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<h1 class="refname">maxdb::insert_id</h1>
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<p class="verinfo">(PECL maxdb >= 1.0)</p><p class="refpurpose"><span class="refname">maxdb_insert_id</span> -- <span class="refname">maxdb::insert_id</span> — <span class="dc-title">Returns the auto generated id used in the last query</span></p>
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</div>
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<div class="refsect1 description" id="refsect1-function.maxdb-insert-id-description">
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<h3 class="title">说明</h3>
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<p class="para">过程化风格</p>
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<div class="methodsynopsis dc-description">
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<span class="methodname"><strong>maxdb_insert_id</strong></span>
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( <span class="methodparam"><span class="type">resource</span> <code class="parameter">$link</code></span>
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) : <span class="type"><a href="language.pseudo-types.html#language.types.mixed" class="type mixed">mixed</a></span></div>
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<p class="para rdfs-comment">面向对象风格</p>
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<div class="fieldsynopsis"><span class="type"><a href="language.pseudo-types.html#language.types.mixed" class="type mixed">mixed</a></span> <var class="varname">$maxdb->insert_id</var>;</div>
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<p class="para">
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The <span class="function"><strong>maxdb_insert_id()</strong></span> function returns the ID generated
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by a query on a table with a column having the DEFAULT SERIAL attribute. If
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the last query wasn't an INSERT or UPDATE statement or if the modified table
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does not have a column with the DEFAULT SERIAL attribute, this function will
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return zero.
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</p>
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</div>
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<div class="refsect1 returnvalues" id="refsect1-function.maxdb-insert-id-returnvalues">
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<h3 class="title">返回值</h3>
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<p class="para">
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The value of the <em>DEFAULT SERIAL</em> field that was updated
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by the previous query. Returns zero if there was no previous query on the
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connection or if the query did not update an <em>DEFAULT_SERIAL</em>
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value.
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</p>
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<blockquote class="note"><p><strong class="note">Note</strong>:
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<p class="para">
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If the number is greater than maximal int value, <span class="function"><strong>maxdb_insert_id()</strong></span>
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will return a string.
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</p>
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</p></blockquote>
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</div>
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<div class="refsect1 examples" id="refsect1-function.maxdb-insert-id-examples">
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<h3 class="title">范例</h3>
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<div class="example" id="example-1377">
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<p><strong>Example #1 面向对象风格</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 />$maxdb </span><span style="color: #007700">= new </span><span style="color: #0000BB">maxdb</span><span style="color: #007700">(</span><span style="color: #DD0000">"localhost"</span><span style="color: #007700">, </span><span style="color: #DD0000">"MONA"</span><span style="color: #007700">, </span><span style="color: #DD0000">"RED"</span><span style="color: #007700">, </span><span style="color: #DD0000">"DEMODB"</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">/* check connection */<br /></span><span style="color: #007700">if (</span><span style="color: #0000BB">maxdb_connect_errno</span><span style="color: #007700">()) {<br /> </span><span style="color: #0000BB">printf</span><span style="color: #007700">(</span><span style="color: #DD0000">"Connect failed: %s\n"</span><span style="color: #007700">, </span><span style="color: #0000BB">maxdb_connect_error</span><span style="color: #007700">());<br /> exit();<br />}<br /><br /></span><span style="color: #0000BB">maxdb_report </span><span style="color: #007700">(</span><span style="color: #0000BB">MAXDB_REPORT_OFF</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$maxdb</span><span style="color: #007700">-></span><span style="color: #0000BB">query</span><span style="color: #007700">(</span><span style="color: #DD0000">"DROP TABLE mycity"</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">maxdb_report </span><span style="color: #007700">(</span><span style="color: #0000BB">MAXDB_REPORT_ERROR</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">$maxdb</span><span style="color: #007700">-></span><span style="color: #0000BB">query</span><span style="color: #007700">(</span><span style="color: #DD0000">"CREATE TABLE mycity LIKE hotel.city"</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$maxdb</span><span style="color: #007700">-></span><span style="color: #0000BB">query</span><span style="color: #007700">(</span><span style="color: #DD0000">"ALTER TABLE mycity ADD id FIXED(11) DEFAULT SERIAL"</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">$query </span><span style="color: #007700">= </span><span style="color: #DD0000">"INSERT INTO mycity (zip,name,state) VALUES ('12203','Albany' ,'NY')"</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$maxdb</span><span style="color: #007700">-></span><span style="color: #0000BB">query</span><span style="color: #007700">(</span><span style="color: #0000BB">$query</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">printf </span><span style="color: #007700">(</span><span style="color: #DD0000">"New Record has id %d.\n"</span><span style="color: #007700">, </span><span style="color: #0000BB">$maxdb</span><span style="color: #007700">-></span><span style="color: #0000BB">insert_id</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">/* drop table */<br /></span><span style="color: #0000BB">$maxdb</span><span style="color: #007700">-></span><span style="color: #0000BB">query</span><span style="color: #007700">(</span><span style="color: #DD0000">"DROP TABLE mycity"</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">/* close connection */<br /></span><span style="color: #0000BB">$maxdb</span><span style="color: #007700">-></span><span style="color: #0000BB">close</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>
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<div class="example" id="example-1378">
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<p><strong>Example #2 过程化风格</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 />$link </span><span style="color: #007700">= </span><span style="color: #0000BB">maxdb_connect</span><span style="color: #007700">(</span><span style="color: #DD0000">"localhost"</span><span style="color: #007700">, </span><span style="color: #DD0000">"MONA"</span><span style="color: #007700">, </span><span style="color: #DD0000">"RED"</span><span style="color: #007700">, </span><span style="color: #DD0000">"DEMODB"</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">/* check connection */<br /></span><span style="color: #007700">if (</span><span style="color: #0000BB">maxdb_connect_errno</span><span style="color: #007700">()) {<br /> </span><span style="color: #0000BB">printf</span><span style="color: #007700">(</span><span style="color: #DD0000">"Connect failed: %s\n"</span><span style="color: #007700">, </span><span style="color: #0000BB">maxdb_connect_error</span><span style="color: #007700">());<br /> exit();<br />}<br /><br /></span><span style="color: #0000BB">maxdb_report </span><span style="color: #007700">(</span><span style="color: #0000BB">MAXDB_REPORT_OFF</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">maxdb_query</span><span style="color: #007700">(</span><span style="color: #0000BB">$link</span><span style="color: #007700">,</span><span style="color: #DD0000">"DROP TABLE mycity"</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">maxdb_report </span><span style="color: #007700">(</span><span style="color: #0000BB">MAXDB_REPORT_ERROR</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">maxdb_query</span><span style="color: #007700">(</span><span style="color: #0000BB">$link</span><span style="color: #007700">, </span><span style="color: #DD0000">"CREATE TABLE mycity LIKE hotel.city"</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">maxdb_query</span><span style="color: #007700">(</span><span style="color: #0000BB">$link</span><span style="color: #007700">, </span><span style="color: #DD0000">"ALTER TABLE mycity ADD id FIXED(11) DEFAULT SERIAL"</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">$query </span><span style="color: #007700">= </span><span style="color: #DD0000">"INSERT INTO mycity (zip,name,state) VALUES ('12203','Albany' ,'NY')"</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">maxdb_query</span><span style="color: #007700">(</span><span style="color: #0000BB">$link</span><span style="color: #007700">, </span><span style="color: #0000BB">$query</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">printf </span><span style="color: #007700">(</span><span style="color: #DD0000">"New Record has id %d.\n"</span><span style="color: #007700">, </span><span style="color: #0000BB">maxdb_insert_id</span><span style="color: #007700">(</span><span style="color: #0000BB">$link</span><span style="color: #007700">));<br /><br /></span><span style="color: #FF8000">/* drop table */<br /></span><span style="color: #0000BB">maxdb_query</span><span style="color: #007700">(</span><span style="color: #0000BB">$link</span><span style="color: #007700">, </span><span style="color: #DD0000">"DROP TABLE mycity"</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">/* close connection */<br /></span><span style="color: #0000BB">maxdb_close</span><span style="color: #007700">(</span><span style="color: #0000BB">$link</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>
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<p class="para">以上例程的输出类似于：</p>
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<div class="example-contents screen">
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<div class="cdata"><pre>
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New Record has id 1.
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</pre></div>
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</div>
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</div>
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</div></div></div></body></html> |