📄 function.px-new.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>Create a new paradox object</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.px-insert-record.html">px_insert_record</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.px-numfields.html">px_numfields</a></div> <div class="up"><a href="ref.paradox.html">Paradox Functions</a></div> <div class="home"><a href="index.html">PHP Manual</a></div></div><hr /><div id="function.px-new" class="refentry"> <div class="refnamediv"> <h1 class="refname">px_new</h1> <p class="verinfo">(PECL paradox:1.0-1.4.1)</p><p class="refpurpose"><span class="refname">px_new</span> — <span class="dc-title">Create a new paradox object</span></p> </div> <div class="refsect1 description"> <h3 class="title">Description</h3> <div class="methodsynopsis dc-description"> <span class="type">resource</span> <span class="methodname"><b><b>px_new</b></b></span> ( <span class="methodparam">void</span> )</div> <p class="para rdfs-comment"> Create a new paradox object. You will have to call this function before any further functions. <b>px_new()</b> does not create any file on the disk, it just creates an instance of a paradox object. This function must not be called if the object oriented interface is used. Use <i>new paradox_db()</i> instead. </p> </div> <div class="refsect1 returnvalues"> <h3 class="title">Return Values</h3> <p class="para"> Returns <b><tt>FALSE</tt></b> on failure. </p> </div> <div class="refsect1 examples"> <h3 class="title">Examples</h3> <p class="para"> <div class="example"> <p><b>Example #1 Opening a Paradox database</b></p> <div class="example-contents"><div class="phpcode"><code><span style="color: #000000"><span style="color: #0000BB"><?php<br /></span><span style="color: #007700">if(!</span><span style="color: #0000BB">$pxdoc </span><span style="color: #007700">= </span><span style="color: #0000BB">px_new</span><span style="color: #007700">()) {<br /> </span><span style="color: #FF8000">/* Error handling */<br /></span><span style="color: #007700">}<br /></span><span style="color: #0000BB">$fp </span><span style="color: #007700">= </span><span style="color: #0000BB">fopen</span><span style="color: #007700">(</span><span style="color: #DD0000">"test.db"</span><span style="color: #007700">, </span><span style="color: #DD0000">"r"</span><span style="color: #007700">);<br />if(!</span><span style="color: #0000BB">px_open_fp</span><span style="color: #007700">(</span><span style="color: #0000BB">$pxdoc</span><span style="color: #007700">, </span><span style="color: #0000BB">$fp</span><span style="color: #007700">)) {<br /> </span><span style="color: #FF8000">/* Error handling */<br /></span><span style="color: #007700">}<br /></span><span style="color: #FF8000">// ...<br /></span><span style="color: #0000BB">px_close</span><span style="color: #007700">(</span><span style="color: #0000BB">$pxdoc</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">px_delete</span><span style="color: #007700">(</span><span style="color: #0000BB">$pxdoc</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">fclose</span><span style="color: #007700">(</span><span style="color: #0000BB">$fp</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">?></span></span></code></div> </div> </div> </p> <p class="para"> If you prefer the object oriented API, then the above example will look like the following. <div class="example"> <p><b>Example #2 Opening a Paradox database</b></p> <div class="example-contents"><div class="phpcode"><code><span style="color: #000000"><span style="color: #0000BB"><?php<br />$fp </span><span style="color: #007700">= </span><span style="color: #0000BB">fopen</span><span style="color: #007700">(</span><span style="color: #DD0000">"test.db"</span><span style="color: #007700">, </span><span style="color: #DD0000">"r"</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$pxdoc </span><span style="color: #007700">= new </span><span style="color: #0000BB">paradox_db</span><span style="color: #007700">();<br />if(!</span><span style="color: #0000BB">$pxdoc</span><span style="color: #007700">-></span><span style="color: #0000BB">open_fp</span><span style="color: #007700">(</span><span style="color: #0000BB">$fp</span><span style="color: #007700">)) {<br /> </span><span style="color: #FF8000">/* Error handling */<br /></span><span style="color: #007700">}<br /></span><span style="color: #FF8000">// ...<br /></span><span style="color: #0000BB">$pxdoc</span><span style="color: #007700">-></span><span style="color: #0000BB">close</span><span style="color: #007700">();<br /></span><span style="color: #0000BB">fclose</span><span style="color: #007700">(</span><span style="color: #0000BB">$fp</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">?></span></span></code></div> </div> </div> </p> </div> <div class="refsect1 seealso"> <h3 class="title">See Also</h3> <p class="para"> <ul class="simplelist"> <li class="member"><a href="function.px-delete.html" class="function" rel="rdfs-seeAlso">px_delete()</a></li> <li class="member"><a href="function.px-open-fp.html" class="function" rel="rdfs-seeAlso">px_open_fp()</a></li> </ul> </p> </div></div><hr /><div style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="function.px-insert-record.html">px_insert_record</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.px-numfields.html">px_numfields</a></div> <div class="up"><a href="ref.paradox.html">Paradox 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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