smarty/docs/en/designers/language-modifiers/language-modifier-cat.xml

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 <sect1 id="language.modifier.cat">
  <title>cat</title>
    <para>
     This value is concatenated to the given variable.
  </para>
  <informaltable frame="all">
   <tgroup cols="5">
    <colspec colname="param" align="center" />
    <colspec colname="type" align="center" />
    <colspec colname="required" align="center" />
    <colspec colname="cat" align="center" />
    <colspec colname="desc" />
    <thead>
     <row>
      <entry>Parameter Position</entry>
      <entry>Type</entry>
      <entry>Required</entry>
      <entry>Default</entry>
      <entry>Description</entry>
     </row>
    </thead>
    <tbody>
     <row>
      <entry>1</entry>
      <entry>string</entry>
      <entry>No</entry>
      <entry><emphasis>empty</emphasis></entry>
      <entry>This value to catenate to the given variable.</entry>
     </row>
    </tbody>
   </tgroup>
  </informaltable>

  <example>
   <title>cat</title>
   <programlisting role="php">
<![CDATA[
<?php

$smarty->assign('articleTitle', "Psychics predict world didn't end");

?>
]]>
   </programlisting>
   <para>
    Where template is:
   </para>
   <programlisting>
<![CDATA[
{$articleTitle|cat:' yesterday.'}
]]>
   </programlisting>
   <para>
    Will output:
   </para>
   <screen>
<![CDATA[
Psychics predict world didn't end yesterday.
]]>
   </screen>
  </example>
</sect1>
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