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155 lines
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HTML
155 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>Get field information</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.mssql-fetch-field" class="refentry">
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<div class="refnamediv">
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<h1 class="refname">mssql_fetch_field</h1>
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<p class="verinfo">(PHP 4, PHP 5, PECL odbtp >= 1.1.1)</p><p class="refpurpose"><span class="refname">mssql_fetch_field</span> — <span class="dc-title">Get field information</span></p>
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</div>
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<div id="function.mssql-fetch-field-refsynopsisdiv">
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<div class="warning"><strong class="warning">Warning</strong>
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<p class="para">
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This function was <em class="emphasis">REMOVED</em> in PHP 7.0.0.
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</p>
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<p class="para">
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Alternatives to this function include:
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</p>
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<ul class="simplelist">
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<li class="member"><span class="function"><a href="pdostatement.getcolumnmeta.html" class="function">PDOStatement::getColumnMeta()</a></span></li>
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<li class="member"><span class="function"><a href="sqlsrv_field_metadata.html" class="function">sqlsrv_field_metadata()</a></span></li>
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<li class="member">
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The various odbc_field_* functions in the
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<a href="book.uodbc.html" class="link">unified ODBC driver</a>.
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</li>
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</ul>
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</div>
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</div>
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<div class="refsect1 description" id="refsect1-function.mssql-fetch-field-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>mssql_fetch_field</strong></span>
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( <span class="methodparam"><span class="type">resource</span> <code class="parameter">$result</code></span>
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[, <span class="methodparam"><span class="type">int</span> <code class="parameter">$field_offset</code><span class="initializer"> = -1</span></span>
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] ) : <span class="type">object</span></div>
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<p class="para rdfs-comment">
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<span class="function"><strong>mssql_fetch_field()</strong></span> can be used in order to
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obtain information about fields in a certain query result.
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</p>
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</div>
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<div class="refsect1 parameters" id="refsect1-function.mssql-fetch-field-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">result</code></dt>
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<dd>
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<p class="para">
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The result resource that is being evaluated. This result comes from a
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call to <span class="function"><a href="mssql_query.html" class="function">mssql_query()</a></span>.
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</p>
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</dd>
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<dt>
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<code class="parameter">field_offset</code></dt>
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<dd>
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<p class="para">
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The numerical field offset. If the field offset is not specified, the
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next field that was not yet retrieved by this function is retrieved. The
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<code class="parameter">field_offset</code> starts at 0.
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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.mssql-fetch-field-returnvalues">
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<h3 class="title">返回值</h3>
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<p class="para">
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Returns an object containing field information.
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</p>
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<p class="para">
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The properties of the object are:
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</p>
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<ul class="itemizedlist">
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<li class="listitem">
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<span class="simpara">
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name - column name. if the column is a result of a function,
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this property is set to computed#N, where #N is a serial
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number.
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</span>
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</li>
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<li class="listitem">
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<span class="simpara">
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column_source - the table from which the column was taken
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</span>
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</li>
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<li class="listitem">
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<span class="simpara">
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max_length - maximum length of the column
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</span>
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</li>
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<li class="listitem">
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<span class="simpara">
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numeric - 1 if the column is numeric
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</span>
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</li>
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<li class="listitem">
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<span class="simpara">
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type - the column type.
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</span>
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</li>
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</ul>
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</div>
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<div class="refsect1 examples" id="refsect1-function.mssql-fetch-field-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-1754">
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<p><strong>Example #1 <span class="function"><strong>mssql_fetch_field()</strong></span> example</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 /></span><span style="color: #FF8000">// Connect to MSSQL and select the database<br /></span><span style="color: #0000BB">mssql_connect</span><span style="color: #007700">(</span><span style="color: #DD0000">'MANGO\SQLEXPRESS'</span><span style="color: #007700">, </span><span style="color: #DD0000">'sa'</span><span style="color: #007700">, </span><span style="color: #DD0000">'phpfi'</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">mssql_select_db</span><span style="color: #007700">(</span><span style="color: #DD0000">'php'</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">// Send a select query to MSSQL<br /></span><span style="color: #0000BB">$query </span><span style="color: #007700">= </span><span style="color: #0000BB">mssql_query</span><span style="color: #007700">(</span><span style="color: #DD0000">'SELECT * FROM [php].[dbo].[persons]'</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">// Construct table<br /></span><span style="color: #007700">echo </span><span style="color: #DD0000">'<h3>Table structure for \'persons\'</h3>'</span><span style="color: #007700">;<br />echo </span><span style="color: #DD0000">'<table border="1">'</span><span style="color: #007700">;<br /><br /></span><span style="color: #FF8000">// Table header<br /></span><span style="color: #007700">echo </span><span style="color: #DD0000">'<thead>'</span><span style="color: #007700">;<br />echo </span><span style="color: #DD0000">'<tr>'</span><span style="color: #007700">;<br />echo </span><span style="color: #DD0000">'<td>Field name</td>'</span><span style="color: #007700">;<br />echo </span><span style="color: #DD0000">'<td>Data type</td>'</span><span style="color: #007700">;<br />echo </span><span style="color: #DD0000">'<td>Max length</td>'</span><span style="color: #007700">;<br />echo </span><span style="color: #DD0000">'</tr>'</span><span style="color: #007700">;<br />echo </span><span style="color: #DD0000">'</thead>'</span><span style="color: #007700">;<br /><br /></span><span style="color: #FF8000">// Dump all fields<br /></span><span style="color: #007700">echo </span><span style="color: #DD0000">'<tbody>'</span><span style="color: #007700">;<br /><br />for (</span><span style="color: #0000BB">$i </span><span style="color: #007700">= </span><span style="color: #0000BB">0</span><span style="color: #007700">; </span><span style="color: #0000BB">$i </span><span style="color: #007700">< </span><span style="color: #0000BB">mssql_num_fields</span><span style="color: #007700">(</span><span style="color: #0000BB">$query</span><span style="color: #007700">); ++</span><span style="color: #0000BB">$i</span><span style="color: #007700">) {<br /> </span><span style="color: #FF8000">// Fetch the field information<br /> </span><span style="color: #0000BB">$field </span><span style="color: #007700">= </span><span style="color: #0000BB">mssql_fetch_field</span><span style="color: #007700">(</span><span style="color: #0000BB">$query</span><span style="color: #007700">, </span><span style="color: #0000BB">$i</span><span style="color: #007700">);<br /><br /> </span><span style="color: #FF8000">// Print the row<br /> </span><span style="color: #007700">echo </span><span style="color: #DD0000">'<tr>'</span><span style="color: #007700">;<br /> echo </span><span style="color: #DD0000">'<td>' </span><span style="color: #007700">. </span><span style="color: #0000BB">$field</span><span style="color: #007700">-></span><span style="color: #0000BB">name </span><span style="color: #007700">. </span><span style="color: #DD0000">'</td>'</span><span style="color: #007700">;<br /> echo </span><span style="color: #DD0000">'<td>' </span><span style="color: #007700">. </span><span style="color: #0000BB">strtoupper</span><span style="color: #007700">(</span><span style="color: #0000BB">$field</span><span style="color: #007700">-></span><span style="color: #0000BB">type</span><span style="color: #007700">) . </span><span style="color: #DD0000">'</td>'</span><span style="color: #007700">;<br /> echo </span><span style="color: #DD0000">'<td>' </span><span style="color: #007700">. </span><span style="color: #0000BB">$field</span><span style="color: #007700">-></span><span style="color: #0000BB">max_length </span><span style="color: #007700">. </span><span style="color: #DD0000">'</td>'</span><span style="color: #007700">;<br /> echo </span><span style="color: #DD0000">'</tr>'</span><span style="color: #007700">;<br />}<br /><br />echo </span><span style="color: #DD0000">'</tbody>'</span><span style="color: #007700">;<br />echo </span><span style="color: #DD0000">'</table>'</span><span style="color: #007700">;<br /><br /></span><span style="color: #FF8000">// Free the query result<br /></span><span style="color: #0000BB">mssql_free_result</span><span style="color: #007700">(</span><span style="color: #0000BB">$query</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>
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</div>
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<div class="refsect1 seealso" id="refsect1-function.mssql-fetch-field-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="mssql_field_seek.html" class="function" rel="rdfs-seeAlso">mssql_field_seek()</a> - Seeks to the specified field offset</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> |