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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>Instantiates an SQLite3 object and opens an SQLite 3 database</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="sqlite3.close.html">SQLite3::close</a></div> <div class="next" style="text-align: right; float: right;"><a href="sqlite3.createaggregate.html">SQLite3::createAggregate</a></div> <div class="up"><a href="class.sqlite3.html">SQLite3</a></div> <div class="home"><a href="index.html">PHP Manual</a></div></div><hr /><div id="sqlite3.construct" class="refentry"> <div class="refnamediv"> <h1 class="refname">SQLite3::__construct</h1> <p class="verinfo">(No version information available, might be only in CVS)</p><p class="refpurpose"><span class="refname">SQLite3::__construct</span> — <span class="dc-title"> Instantiates an SQLite3 object and opens an SQLite 3 database </span></p> </div> <div class="refsect1 description"> <h3 class="title">Description</h3> <div class="methodsynopsis dc-description"> <span class="methodname"><b><b>SQLite3::__construct</b></b></span> ( <span class="methodparam"><span class="type">string</span> <tt class="parameter">$filename</tt></span> [, <span class="methodparam"><span class="type">int</span> <tt class="parameter">$flags</tt></span> [, <span class="methodparam"><span class="type">string</span> <tt class="parameter">$encryption_key</tt></span> ]] )</div> <p class="para rdfs-comment"> Instantiates an SQLite3 object and opens a connection to an SQLite 3 database. If the build includes encryption, then it will attempt to use the key. </p> </div> <div class="refsect1 parameters"> <h3 class="title">Parameters</h3> <p class="para"> <dl> <dt> <span class="term"><i><tt class="parameter">filename</tt></i></span> <dd> <p class="para"> Path to the SQLite database. </p> </dd> </dt> <dt> <span class="term"><i><tt class="parameter">flags</tt></i></span> <dd> <p class="para"> Optional flags used to determine how to open the SQLite database. By default, open uses <i>SQLITE3_OPEN_READWRITE | SQLITE3_OPEN_CREATE</i>. <ul class="itemizedlist"> <li class="listitem"> <p class="para"> <i>SQLITE3_OPEN_READONLY</i>: Open the database for reading only. </p> </li> <li class="listitem"> <p class="para"> <i>SQLITE3_OPEN_READWRITE</i>: Open the database for reading and writing. </p> </li> <li class="listitem"> <p class="para"> <i>SQLITE3_OPEN_CREATE</i>: Create the database if it does not exist. </p> </li> </ul> </p> </dd> </dt> <dt> <span class="term"><i><tt class="parameter">encryption_key</tt></i></span> <dd> <p class="para"> An optional encryption key used when encrypting and decrypting an SQLite database. </p> </dd> </dt> </dl> </p> </div> <div class="refsect1 returnvalues"> <h3 class="title">Return Values</h3> <p class="para"> Returns an SQLite3 object on success. </p> </div> <div class="refsect1 examples"> <h3 class="title">Examples</h3> <p class="para"> <div class="example"> <p><b>Example #1 <b>SQLite3::__construct()</b> example</b></p> <div class="example-contents"><div class="phpcode"><code><span style="color: #000000"><span style="color: #0000BB"><?php<br />$db </span><span style="color: #007700">= new </span><span style="color: #0000BB">SQLite3</span><span style="color: #007700">(</span><span style="color: #DD0000">'mysqlitedb.db'</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">$db</span><span style="color: #007700">-></span><span style="color: #0000BB">exec</span><span style="color: #007700">(</span><span style="color: #DD0000">'CREATE TABLE foo (bar STRING)'</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$db</span><span style="color: #007700">-></span><span style="color: #0000BB">exec</span><span style="color: #007700">(</span><span style="color: #DD0000">"INSERT INTO foo (bar) VALUES ('This is a test')"</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">$result </span><span style="color: #007700">= </span><span style="color: #0000BB">$db</span><span style="color: #007700">-></span><span style="color: #0000BB">query</span><span style="color: #007700">(</span><span style="color: #DD0000">'SELECT bar FROM foo'</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">var_dump</span><span style="color: #007700">(</span><span style="color: #0000BB">$result</span><span style="color: #007700">-></span><span style="color: #0000BB">fetchArray</span><span style="color: #007700">());<br /></span><span style="color: #0000BB">?></span></span></code></div> </div> </div> </p> </div></div><hr /><div style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="sqlite3.close.html">SQLite3::close</a></div> <div class="next" style="text-align: right; float: right;"><a href="sqlite3.createaggregate.html">SQLite3::createAggregate</a></div> <div class="up"><a href="class.sqlite3.html">SQLite3</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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