php-doc-en/reference/ps/functions/ps-stringwidth.xml

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<refentry id="function.ps-stringwidth">
  <refnamediv>
    <refname>ps_stringwidth</refname>

    <refpurpose>Gets width of a string</refpurpose>
  </refnamediv>
  <refsect1>
   <title>Description</title>
    <methodsynopsis>
     <type>float</type><methodname>ps_stringwidth</methodname>
     <methodparam><type>resource</type><parameter>psdoc</parameter></methodparam>
     <methodparam><type>string</type><parameter>text</parameter></methodparam>
     <methodparam choice="opt"><type>int</type><parameter>fontid</parameter></methodparam>
     <methodparam choice="opt"><type>float</type><parameter>size</parameter></methodparam>
    </methodsynopsis>

    <para>Calculates the width of a string in points if it was output
      in the given font and font size.
      This function needs an Adobe font
      metrics file to calculate the precise width. If kerning is turned on,
      it will be taken into account.</para>

  </refsect1>
  <refsect1>
    <title>Return value</title>
    <para>Width of a string in points.</para>
  </refsect1>
  <refsect1>
    <title>See also</title>

    <para><function>ps_string_geometry</function></para>

  </refsect1>
</refentry>

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