splfloat.construct.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>Constructs a float object type</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="class.splfloat.html">SplFloat</a></div> <div class="next" style="text-align: right; float: right;"><a href="class.splenum.html">SplEnum</a></div> <div class="up"><a href="class.splfloat.html">SplFloat</a></div> <div class="home"><a href="index.html">PHP Manual</a></div></div><hr /><div id="splfloat.construct" class="refentry"> <div class="refnamediv"> <h1 class="refname">SplFloat::__construct</h1> <p class="verinfo">(No version information available, might be only in CVS)</p><p class="refpurpose"><span class="refname">SplFloat::__construct</span> — <span class="dc-title">Constructs a float object type</span></p> </div> <div class="refsect1 description"> <h3 class="title">Description</h3> <div class="constructorsynopsis dc-description"> <span class="methodname"><b><b>SplFloat::__construct</b></b></span> ( <span class="methodparam">void</span> )</div> <p class="para rdfs-comment"> This constructs a new object of type float. </p> </div> <div class="refsect1 parameters"> <h3 class="title">Parameters</h3> <p class="para"> <dl> <dt> <span class="term"><i><tt class="parameter">input</tt></i></span> <dd> <p class="para"> The <i><tt class="parameter">input</tt></i> parameter accepts a <a href="language.types.float.html" class="type float">float</a> or an <a href="language.types.integer.html" class="type integer">integer</a>. If an <a href="language.types.integer.html" class="type integer">integer</a> is passed, it will be converted to <a href="language.types.float.html" class="type float">float</a>. </p> </dd> </dt> </dl> </p> </div> <div class="refsect1 returnvalues"> <h3 class="title">Return Values</h3> <p class="para"> No value is returned. </p> </div> <div class="refsect1 examples"> <h3 class="title">Examples</h3> <p class="para"> <div class="example"> <p><b>Example #1 <b>SplFloat::__construct()</b> example</b></p> <div class="example-contents"><div class="phpcode"><code><span style="color: #000000"><span style="color: #0000BB"><?php<br />$float </span><span style="color: #007700">= new </span><span style="color: #0000BB">SplFloat</span><span style="color: #007700">(</span><span style="color: #0000BB">3.154</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$newFloat </span><span style="color: #007700">= new </span><span style="color: #0000BB">SplFloat</span><span style="color: #007700">(</span><span style="color: #0000BB">3</span><span style="color: #007700">);<br /><br />try {<br /> </span><span style="color: #0000BB">$float </span><span style="color: #007700">= </span><span style="color: #DD0000">'Try to cast a string value for fun'</span><span style="color: #007700">;<br />} catch (</span><span style="color: #0000BB">UnexpectedValueException $uve</span><span style="color: #007700">) {<br /> echo </span><span style="color: #0000BB">$uve</span><span style="color: #007700">-></span><span style="color: #0000BB">getMessage</span><span style="color: #007700">() . </span><span style="color: #0000BB">PHP_EOL</span><span style="color: #007700">;<br />}<br /><br /></span><span style="color: #0000BB">var_dump</span><span style="color: #007700">(</span><span style="color: #0000BB">$float</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">var_dump</span><span style="color: #007700">(</span><span style="color: #0000BB">$newFloat</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">?></span></span></code></div> </div> <div class="example-contents"><p>The above example will output:</p></div> <div class="example-contents"><pre><div class="cdata"><pre>Value not a floatobject(SplFloat)#1 (1) { ["__default"]=> float(3.154)}object(SplFloat)#2 (1) { ["__default"]=> float(3)}</pre></div> </pre></div> </div> </p> </div></div><hr /><div style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="class.splfloat.html">SplFloat</a></div> <div class="next" style="text-align: right; float: right;"><a href="class.splenum.html">SplEnum</a></div> <div class="up"><a href="class.splfloat.html">SplFloat</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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