cvs: phpdoc-da /reference/strings/functions sprintf.xml

http://cvs.php.net/co.php/phpdoc-da/reference/strings/functions/sprintf.xml?r=1.1&p=1
Index: phpdoc-da/reference/strings/functions/sprintf.xml
+++ phpdoc-da/reference/strings/functions/sprintf.xml
<?xml version="1.0" encoding="iso-8859-1"?>
<!-- $Revision: 1.1 $ -->
<!-- EN-Revision: 1.9 Maintainer: holst Status: ready -->
  <refentry id="function.sprintf">
   <refnamediv>
    <refname>sprintf</refname>
    <refpurpose>Returner en formateret streng</refpurpose>
   </refnamediv>
   <refsect1>
    <title>Beskrivelse</title>
     <methodsynopsis>
      <type>string</type><methodname>sprintf</methodname>
      <methodparam><type>string</type><parameter>format</parameter></methodparam>
      <methodparam choice="opt"><type>mixed</type><parameter>args</parameter></methodparam>
     </methodsynopsis>
    <simpara>
     Returnerer en streng produceret af specifikationerne givet i
     <parameter>format</parameter>.
    </simpara>
    <simpara>
     Formateringsstrengen bliver dannet af ingen eller flere direktiver:
     ordinære tegn (eksklusiv <literal>%</literal>) som bliver kopieret
     direkte til resultatet og
     <emphasis>konverteringsspecifikationer</emphasis>, hvert resulterer i at
     fange dets eget parameter. Dette gælder for både
     <function>sprintf</function> og <function>printf</function>.
     
     The format string is composed of zero or more directives:
     ordinary characters (excluding <literal>%</literal>) that are
     copied directly to the result, and <emphasis>conversion
     specifications</emphasis>, each of which results in fetching its
     own parameter.  This applies to both <function>sprintf</function>
     and <function>printf</function>.
    </simpara>
    <para>
     Hver konverteringspecifikation består af et procenttegn
     (<literal>%</literal>), fulgt af et eller flere af disse elementer, i
     rækkefølge:
     <orderedlist>
      <listitem>
       <simpara>
        En valgfri <emphasis>padding specifier</emphasis> som fortæller
        hvilken karakter der skal bruges til at udfylde resultaterne til den
        korrekte strengstørrelse. Der kan bruges et mellemrum eller et
        <literal>0</literal> (nultegn). Standarden er at udfylde med
        mellemrum. Et alternativ udfyldningstegn kan blive specificeret ved
        præfikse dem med et enkelt citationstegn (<literal>'</literal>). Se
        eksemplerne herunder.
       </simpara>
      </listitem>
      <listitem>
       <simpara>
        En valgfri<emphasis>alignment specifier</emphasis> som siger om
        resultatet skal være venstrestillet eller højrestillet.
        Standarden er højrestillet; et <literal>-</literal> tegn her vil gøre
        det venstrestillet.
       </simpara>
      </listitem>
      <listitem>
       <simpara>
        Et valgfrit tal, en <emphasis>width specifier</emphasis> som fortæller
        hvor mange tegn (minimum) denne konvertering skal resultere i.
       </simpara>
      </listitem>
      <listitem>
       <simpara>
        En valgfri <emphasis>precision specifier</emphasis> som fortæller hvor
        mange decimalcifre der skal vises som flydende decimalnumre. Denne
        mulighed har ikke nogen effekt for andre typer end <type>float</type>.
        (En anden funktion der er brugbar for formatering af numre er
        <function>number_format</function>).
       </simpara>
      </listitem>
      <listitem>
       <para>
        A <emphasis>type specifier</emphasis> that says what type the
        argument data should be treated as.  Possible types:
        <simplelist>
         <member>
          <literal>%</literal> - a literal percent character. No
          argument is required.
         </member>
         <member>
          <literal>b</literal> - the argument is treated as an
          integer, and presented as a binary number.
         </member>
         <member>
          <literal>c</literal> - the argument is treated as an
          integer, and presented as the character with that ASCII
          value.
         </member>
         <member>
          <literal>d</literal> - the argument is treated as an
          integer, and presented as a (signed) decimal number.
         </member>
         <member>
          <literal>e</literal> - the argument is treated as scientific
          notation (e.g. 1.2e+2).
         </member>
         <member>
          <literal>u</literal> - the argument is treated as an
          integer, and presented as an unsigned decimal number.
         </member>
         <member>
          <literal>f</literal> - the argument is treated as a
          <type>float</type>, and presented as a floating-point number.
         </member>
         <member>
          <literal>o</literal> - the argument is treated as an
          integer, and presented as an octal number.
         </member>
         <member>
          <literal>s</literal> - the argument is treated as and
          presented as a string.
         </member>
         <member>
          <literal>x</literal> - the argument is treated as an integer
          and presented as a hexadecimal number (with lowercase
          letters).
         </member>
         <member>
          <literal>X</literal> - the argument is treated as an integer
          and presented as a hexadecimal number (with uppercase
          letters).
         </member>
        </simplelist>
       </para>
      </listitem>
     </orderedlist>
    </para>
    <para>
     As of PHP 4.0.6 the format string supports argument
     numbering/swapping.  Here is an example:
     <example>
      <title>Argument swapping</title>
      <programlisting role="php">
<![CDATA[
<?php
$format = "There are %d monkeys in the %s";
printf($format, $num, $location);
?>
]]>
      </programlisting>
     </example>
     This might output, "There are 5 monkeys in the tree".  But
     imagine we are creating a format string in a separate file,
     commonly because we would like to internationalize it and we
     rewrite it as:
     <example>
      <title>Argument swapping</title>
      <programlisting role="php">
<![CDATA[
<?php
$format = "The %s contains %d monkeys";
printf($format, $num, $location);
?>
]]>
      </programlisting>
     </example>
     We now have a problem.  The order of the placeholders in the
     format string does not match the order of the arguments in the
     code.  We would like to leave the code as is and simply indicate
     in the format string which arguments the placeholders refer to.
     We would write the format string like this instead:
     <example>
      <title>Argument swapping</title>
      <programlisting role="php">
<![CDATA[
<?php
$format = "The %2\$s contains %1\$d monkeys";
printf($format, $num, $location);
?>
]]>
      </programlisting>
     </example>
     An added benefit here is that you can repeat the placeholders without
     adding more arguments in the code.  For example:
     <example>
      <title>Argument swapping</title>
      <programlisting role="php">
<![CDATA[
<?php
$format = "The %2\$s contains %1\$d monkeys.
           That's a nice %2\$s full of %1\$d monkeys.";
printf($format, $num, $location);
?>
]]>
      </programlisting>
     </example>
    </para>
    <simpara>
     See also <function>printf</function>,
     <function>sscanf</function>, <function>fscanf</function>, 
     <function>vsprintf</function>, and
     <function>number_format</function>.
    </simpara>
   </refsect1>
   <refsect1>
    <title>Examples</title>
    <para>
     <example>
      <title><function>sprintf</function>: zero-padded integers</title>
      <programlisting role="php">
<![CDATA[
<?php
$isodate = sprintf("%04d-%02d-%02d", $year, $month, $day);
?>
]]>
      </programlisting>
     </example>
     <example>
      <title><function>sprintf</function>: formatting currency</title>
      <programlisting role="php">
<![CDATA[
<?php
$money1 = 68.75;
$money2 = 54.35;
$money = $money1 + $money2;
// echo $money will output "123.1";
$formatted = sprintf("%01.2f", $money);
// echo $formatted will output "123.10"
?>
]]>
      </programlisting>
     </example>
     <example>
      <title><function>sprintf</function>: scientific notation</title>
      <programlisting role="php">
<![CDATA[
<?php
$number = 362525200;

echo sprintf("%.3e", $number); // outputs 3.63e+8
?>
]]>
      </programlisting>
     </example>
    </para>
   </refsect1>
  </refentry>

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