php-doc-en/reference/image/functions/imagecreate.xml

<?xml version="1.0" encoding="iso-8859-1"?>
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 <refentry id="function.imagecreate">
  <refnamediv>
   <refname>imagecreate</refname>
   <refpurpose>Create a new palette based image</refpurpose>
  </refnamediv>
  <refsect1>
   <title>Description</title>
    <methodsynopsis>
     <type>resource</type><methodname>imagecreate</methodname>
     <methodparam><type>int</type><parameter>x_size</parameter></methodparam>
     <methodparam><type>int</type><parameter>y_size</parameter></methodparam>
    </methodsynopsis>
   <para>
    <function>imagecreate</function> returns an image identifier
    representing a blank image of size <parameter>x_size</parameter>
    by <parameter>y_size</parameter>.
   </para>
   <para>
    We recommend the use of <function>imagecreatetruecolor</function>.
   </para>
   <para>
    <example>
     <title>
      Creating a new GD image stream and outputting an image.
     </title>
     <programlisting role="php">
<![CDATA[
<?php
header ("Content-type: image/png");
$im = @imagecreate (50, 100)
    or die ("Cannot Initialize new GD image stream");
$background_color = imagecolorallocate ($im, 255, 255, 255);
$text_color = imagecolorallocate ($im, 233, 14, 91);
imagestring ($im, 1, 5, 5,  "A Simple Text String", $text_color);
imagepng ($im);
imagedestroy ($im);
?>
]]>
     </programlisting>
    </example>
   </para>
   <para>
    See also <function>imagedestroy</function> and
    <function>imagecreatetruecolor</function>.
   </para>
  </refsect1>
 </refentry>

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