mirror of
https://github.com/fofolee/uTools-Manuals.git
synced 2025-06-17 21:16:57 +08:00
92 lines
12 KiB
HTML
92 lines
12 KiB
HTML
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
|
|
<html>
|
|
<head>
|
|
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
|
|
<title>Returns the total number of rows changed, deleted, or
|
|
inserted by the last executed statement</title>
|
|
</head>
|
|
<body class="docs"></div>
|
|
<div id="layout">
|
|
<div id="layout-content"><div id="function.maxdb-stmt-affected-rows" class="refentry">
|
|
<div class="refnamediv">
|
|
<h1 class="refname">maxdb_stmt_affected_rows</h1>
|
|
<h1 class="refname">maxdb_stmt::affected_rows</h1>
|
|
<p class="verinfo">(PECL maxdb >= 1.0)</p><p class="refpurpose"><span class="refname">maxdb_stmt_affected_rows</span> -- <span class="refname">maxdb_stmt::affected_rows</span> — <span class="dc-title">Returns the total number of rows changed, deleted, or
|
|
inserted by the last executed statement
|
|
</span></p>
|
|
|
|
</div>
|
|
|
|
<div class="refsect1 description" id="refsect1-function.maxdb-stmt-affected-rows-description">
|
|
<h3 class="title">说明</h3>
|
|
<p class="para">过程化风格</p>
|
|
<div class="methodsynopsis dc-description">
|
|
<span class="methodname"><strong>maxdb_stmt_affected_rows</strong></span>
|
|
( <span class="methodparam"><span class="type">resource</span> <code class="parameter">$stmt</code></span>
|
|
) : <span class="type">int</span></div>
|
|
|
|
<p class="para rdfs-comment">面向对象风格</p>
|
|
<div class="fieldsynopsis"><span class="type">int</span> <var class="varname">$maxdb_stmt->affected_rows</var>;</div>
|
|
|
|
<p class="para">
|
|
<span class="function"><strong>maxdb_stmt_affected_rows()</strong></span> returns the number of rows affected
|
|
by INSERT, UPDATE, or DELETE query. If the last query was invalid or the
|
|
number of rows can not determined, this function will return -1.
|
|
</p>
|
|
</div>
|
|
|
|
|
|
<div class="refsect1 returnvalues" id="refsect1-function.maxdb-stmt-affected-rows-returnvalues">
|
|
<h3 class="title">返回值</h3>
|
|
<p class="para">
|
|
An integer greater than zero indicates the number of rows affected or retrieved.
|
|
Zero indicates that no records where updated for an UPDATE/DELETE statement, no
|
|
rows matched the WHERE clause in the query or that no query has yet been executed.
|
|
-1 indicates that the query has returned an error or the number of rows can not determined.
|
|
</p>
|
|
</div>
|
|
|
|
|
|
<div class="refsect1 examples" id="refsect1-function.maxdb-stmt-affected-rows-examples">
|
|
<h3 class="title">范例</h3>
|
|
<div class="example" id="example-1406">
|
|
<p><strong>Example #1 面向对象风格</strong></p>
|
|
<div class="example-contents">
|
|
<div class="phpcode"><pre><span style="color: #000000">
|
|
<span style="color: #0000BB"><?php<br />$maxdb </span><span style="color: #007700">= new </span><span style="color: #0000BB">maxdb</span><span style="color: #007700">(</span><span style="color: #DD0000">"localhost"</span><span style="color: #007700">, </span><span style="color: #DD0000">"MONA"</span><span style="color: #007700">, </span><span style="color: #DD0000">"RED"</span><span style="color: #007700">, </span><span style="color: #DD0000">"DEMODB"</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">/* check connection */<br /></span><span style="color: #007700">if (</span><span style="color: #0000BB">maxdb_connect_errno</span><span style="color: #007700">()) {<br /> </span><span style="color: #0000BB">printf</span><span style="color: #007700">(</span><span style="color: #DD0000">"Connect failed: %s\n"</span><span style="color: #007700">, </span><span style="color: #0000BB">maxdb_connect_error</span><span style="color: #007700">());<br /> exit();<br />}<br /><br /></span><span style="color: #FF8000">/* create temp table */<br /></span><span style="color: #0000BB">$maxdb</span><span style="color: #007700">-></span><span style="color: #0000BB">query</span><span style="color: #007700">(</span><span style="color: #DD0000">"CREATE TABLE temp.mycity LIKE hotel.city"</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">$query </span><span style="color: #007700">= </span><span style="color: #DD0000">"INSERT INTO temp.mycity SELECT * FROM hotel.city WHERE state LIKE ?"</span><span style="color: #007700">;<br /><br /></span><span style="color: #FF8000">/* prepare statement */<br /></span><span style="color: #007700">if (</span><span style="color: #0000BB">$stmt </span><span style="color: #007700">= </span><span style="color: #0000BB">$maxdb</span><span style="color: #007700">-></span><span style="color: #0000BB">prepare</span><span style="color: #007700">(</span><span style="color: #0000BB">$query</span><span style="color: #007700">)) {<br /><br /> </span><span style="color: #FF8000">/* Bind variable for placeholder */<br /> </span><span style="color: #0000BB">$code </span><span style="color: #007700">= </span><span style="color: #DD0000">'N%'</span><span style="color: #007700">;<br /> </span><span style="color: #0000BB">$stmt</span><span style="color: #007700">-></span><span style="color: #0000BB">bind_param</span><span style="color: #007700">(</span><span style="color: #DD0000">"s"</span><span style="color: #007700">, </span><span style="color: #0000BB">$code</span><span style="color: #007700">);<br /><br /> </span><span style="color: #FF8000">/* execute statement */<br /> </span><span style="color: #0000BB">$stmt</span><span style="color: #007700">-></span><span style="color: #0000BB">execute</span><span style="color: #007700">();<br /><br /> </span><span style="color: #0000BB">printf</span><span style="color: #007700">(</span><span style="color: #DD0000">"rows inserted: %d\n"</span><span style="color: #007700">, </span><span style="color: #0000BB">$stmt</span><span style="color: #007700">-></span><span style="color: #0000BB">affected_rows</span><span style="color: #007700">);<br /><br /> </span><span style="color: #FF8000">/* close statement */<br /> </span><span style="color: #0000BB">$stmt</span><span style="color: #007700">-></span><span style="color: #0000BB">close</span><span style="color: #007700">();<br />}<br /><br /></span><span style="color: #FF8000">/* close connection */<br /></span><span style="color: #0000BB">$maxdb</span><span style="color: #007700">-></span><span style="color: #0000BB">close</span><span style="color: #007700">();<br /></span><span style="color: #0000BB">?></span>
|
|
</span>
|
|
</pre></div>
|
|
</div>
|
|
|
|
</div>
|
|
<div class="example" id="example-1407">
|
|
<p><strong>Example #2 过程化风格</strong></p>
|
|
<div class="example-contents">
|
|
<div class="phpcode"><pre><span style="color: #000000">
|
|
<span style="color: #0000BB"><?php<br />$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: #FF8000">/* create temp table */<br /></span><span style="color: #0000BB">maxdb_query</span><span style="color: #007700">(</span><span style="color: #0000BB">$link</span><span style="color: #007700">, </span><span style="color: #DD0000">"CREATE TABLE temp.mycity LIKE hotel.city"</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">$query </span><span style="color: #007700">= </span><span style="color: #DD0000">"INSERT INTO temp.mycity SELECT * FROM hotel.city WHERE state LIKE ?"</span><span style="color: #007700">;<br /><br /></span><span style="color: #FF8000">/* prepare statement */<br /></span><span style="color: #007700">if (</span><span style="color: #0000BB">$stmt </span><span style="color: #007700">= </span><span style="color: #0000BB">maxdb_prepare</span><span style="color: #007700">(</span><span style="color: #0000BB">$link</span><span style="color: #007700">, </span><span style="color: #0000BB">$query</span><span style="color: #007700">)) {<br /><br /> </span><span style="color: #FF8000">/* Bind variable for placeholder */<br /> </span><span style="color: #0000BB">$code </span><span style="color: #007700">= </span><span style="color: #DD0000">'N%'</span><span style="color: #007700">;<br /> </span><span style="color: #0000BB">maxdb_stmt_bind_param</span><span style="color: #007700">(</span><span style="color: #0000BB">$stmt</span><span style="color: #007700">, </span><span style="color: #DD0000">"s"</span><span style="color: #007700">, </span><span style="color: #0000BB">$code</span><span style="color: #007700">);<br /><br /> </span><span style="color: #FF8000">/* execute statement */<br /> </span><span style="color: #0000BB">maxdb_stmt_execute</span><span style="color: #007700">(</span><span style="color: #0000BB">$stmt</span><span style="color: #007700">);<br /><br /> </span><span style="color: #0000BB">printf</span><span style="color: #007700">(</span><span style="color: #DD0000">"rows inserted: %d\n"</span><span style="color: #007700">, </span><span style="color: #0000BB">maxdb_stmt_affected_rows</span><span style="color: #007700">(</span><span style="color: #0000BB">$stmt</span><span style="color: #007700">));<br /><br /> </span><span style="color: #FF8000">/* close statement */<br /> </span><span style="color: #0000BB">maxdb_stmt_close</span><span style="color: #007700">(</span><span style="color: #0000BB">$stmt</span><span style="color: #007700">);<br />}<br /><br /></span><span style="color: #FF8000">/* close connection */<br /></span><span style="color: #0000BB">maxdb_close</span><span style="color: #007700">(</span><span style="color: #0000BB">$link</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">?></span>
|
|
</span>
|
|
</pre></div>
|
|
</div>
|
|
|
|
</div>
|
|
<p class="para">以上例程的输出类似于：</p>
|
|
<div class="example-contents screen">
|
|
<div class="cdata"><pre>
|
|
rows inserted: 4
|
|
</pre></div>
|
|
</div>
|
|
</div>
|
|
|
|
|
|
<div class="refsect1 seealso" id="refsect1-function.maxdb-stmt-affected-rows-seealso">
|
|
<h3 class="title">参见</h3>
|
|
<p class="para">
|
|
<ul class="simplelist">
|
|
<li class="member"><span class="function"><a href="maxdb_stmt_num_rows.html" class="function" rel="rdfs-seeAlso">maxdb_stmt_num_rows()</a> - Return the number of rows in statements result set</span></li>
|
|
<li class="member"><span class="function"><a href="maxdb_prepare.html" class="function" rel="rdfs-seeAlso">maxdb_prepare()</a> - Prepare an SQL statement for execution</span></li>
|
|
</ul>
|
|
</p>
|
|
</div>
|
|
|
|
|
|
</div></div></div></body></html> |