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archived-doc-tr/reference/var/functions/floatval.xml
2023-05-10 13:12:12 +03:00

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<?xml version="1.0" encoding="utf-8"?>
<!-- EN-Revision: fca3920773bcf7ea2aa2f7306103f6d3d0e6b901 Maintainer: nilgun Status: ready -->
<refentry xml:id="function.floatval" xmlns="http://docbook.org/ns/docbook">
<refnamediv>
<refname>floatval</refname>
<refpurpose>Bir değişkenin gerçek sayı değerini döndürür
</refpurpose>
</refnamediv>
<refsect1 role="description">
&reftitle.description;
<methodsynopsis>
<type>float</type><methodname>floatval</methodname>
<methodparam><type>mixed</type><parameter>değişken</parameter></methodparam>
</methodsynopsis>
<para>
Belirtilen değişkenin değerini <type>float</type> türünde döndürür.
</para>
</refsect1>
<refsect1 role="parameters">
&reftitle.parameters;
<para>
<variablelist>
<varlistentry>
<term><parameter>değişken</parameter></term>
<listitem>
<para>
Herhangi bir sayıl değer olabilir. <function>floatval</function>
işlevi nesnelerle kullanılamaz, aksi takdirde
<constant>E_WARNING</constant> seviyesinde bir hata çıktılanır ve işlev
1 değeriyle döner.
</para>
</listitem>
</varlistentry>
</variablelist>
</para>
</refsect1>
<refsect1 role="returnvalues">
&reftitle.returnvalues;
<para>
Belirtilen değişkenin değerini <type>float</type> türünde döndürür.
Boş diziler için 0, boş olmayanlar için ise 1 döner.
</para>
<para>
Dizgelerde baştaki karakter bir sayı olmadıkça çoğunlukla 0 döner.
<link linkend="language.types.float.casting"><type>float</type> türüne
dönüşüm</link> kuralları uygulanır.
apply.
</para>
</refsect1>
<refsect1 role="changelog">
&reftitle.changelog;
<informaltable>
<tgroup cols="2">
<thead>
<row>
<entry>&Version;</entry>
<entry>&Description;</entry>
</row>
</thead>
<tbody>
<row>
<entry>8.0.0</entry>
<entry>
Nesneden dönüşümde hata düzeyi <constant>E_NOTICE</constant> iken
<constant>E_WARNING</constant> oldu.
</entry>
</row>
</tbody>
</tgroup>
</informaltable>
</refsect1>
<refsect1 role="examples">
&reftitle.examples;
<para>
<example>
<title>- <function>floatval</function> örneği</title>
<programlisting role="php">
<![CDATA[
<?php
$var = '122.34343The';
$float_value_of_var = floatval($var);
echo $float_value_of_var; // 122.34343
?>
]]>
</programlisting>
</example>
</para>
<para>
<example>
<title>- <function>floatval</function> ve baştaki karakterin rakam olmaması durumu</title>
<programlisting role="php">
<![CDATA[
<?php
$var = 'The122.34343';
$float_value_of_var = floatval($var);
echo $float_value_of_var; // 0
?>
]]>
</programlisting>
</example>
</para>
</refsect1>
<refsect1 role="seealso">
&reftitle.seealso;
<para>
<simplelist>
<member><function>boolval</function></member>
<member><function>intval</function></member>
<member><function>strval</function></member>
<member><function>settype</function></member>
<member><link linkend="language.types.type-juggling">
Tür Dönüşümü</link></member>
</simplelist>
</para>
</refsect1>
</refentry>
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