function.maxdb-insert-id.html
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html> <head> <title>Returns the auto generated id used in the last query</title> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> </head> <body><div style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="function.maxdb-init.html">maxdb_init</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.maxdb-kill.html">maxdb_kill</a></div> <div class="up"><a href="ref.maxdb.html">MaxDB Functions</a></div> <div class="home"><a href="index.html">PHP Manual</a></div></div><hr /><div id="function.maxdb-insert-id" class="refentry"> <div class="refnamediv"> <h1 class="refname">maxdb_insert_id</h1> <h1 class="refname">maxdb->insert_id</h1> <p class="verinfo">(PECL maxdb:1.0-7.6.00.38)</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> </div> <div class="refsect1 description"> <h3 class="title">Description</h3> <p class="para">Procedural style:</p> <div class="methodsynopsis dc-description"> <span class="type"><a href="language.pseudo-types.html#language.types.mixed" class="type mixed">mixed</a></span> <span class="methodname"><b><b>maxdb_insert_id</b></b></span> ( <span class="methodparam"><span class="type">resource</span> <tt class="parameter">$link</tt></span> )</div> <p class="para rdfs-comment">Object oriented style (property):</p> <div class="classsynopsis"> <div class="ooclass"><b class="classname">maxdb</b></div> <div class="fieldsynopsis"><span class="type"><a href="language.pseudo-types.html#language.types.mixed" class="type mixed">mixed</a></span> <var class="varname">$insert_id</var>;</div> </div> <p class="para"> The <b>maxdb_insert_id()</b> function returns the ID generated by a query on a table with a column having the DEFAULT SERIAL attribute. If the last query wasn't an INSERT or UPDATE statement or if the modified table does not have a column with the DEFAULT SERIAL attribute, this function will return zero. </p> </div> <div class="refsect1 returnvalues"> <h3 class="title">Return Values</h3> <p class="para"> The value of the <i>DEFAULT SERIAL</i> field that was updated by the previous query. Returns zero if there was no previous query on the connection or if the query did not update an <i>DEFAULT_SERIAL</i> value. </p> <blockquote><p><b class="note">Note</b>: If the number is greater than maximal int value, <b>maxdb_insert_id()</b> will return a string. <br /> </p></blockquote> </div> <div class="refsect1 examples"> <h3 class="title">Examples</h3> <div class="example"> <p><b>Example #1 Object oriented style</b></p> <div class="example-contents"><div class="phpcode"><code><span style="color: #000000"><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></span></code></div> </div> </div> <div class="example"> <p><b>Example #2 Procedural style</b></p> <div class="example-contents"><div class="phpcode"><code><span style="color: #000000"><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></span></code></div> </div> </div> <p class="para">The above example will output something similar to:</p> <div class="example-contents"><pre><div class="cdata"><pre>New Record has id 1.</pre></div> </pre></div> </div></div><hr /><div style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="function.maxdb-init.html">maxdb_init</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.maxdb-kill.html">maxdb_kill</a></div> <div class="up"><a href="ref.maxdb.html">MaxDB Functions</a></div> <div class="home"><a href="index.html">PHP Manual</a></div></div></body></html>⌨️ 快捷键说明
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