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<refentry xml:id="function.imagestring" xmlns="http://docbook.org/ns/docbook">

<refnamediv>

<refname>imagestring</refname>

<refpurpose>水平绘制字符串</refpurpose>

</refnamediv>

<refsect1 role="description">

&reftitle.description;

<methodsynopsis>

<type>true</type><methodname>imagestring</methodname>

<methodparam><type>GdImage</type><parameter>image</parameter></methodparam>

<methodparam><type class="union"><type>GdFont</type><type>int</type></type><parameter>font</parameter></methodparam>

<methodparam><type>int</type><parameter>x</parameter></methodparam>

<methodparam><type>int</type><parameter>y</parameter></methodparam>

<methodparam><type>string</type><parameter>string</parameter></methodparam>

<methodparam><type>int</type><parameter>color</parameter></methodparam>

</methodsynopsis>

<para>

在指定坐标处水平绘制 <parameter>string</parameter>。

</para>

</refsect1>

<refsect1 role="parameters">

&reftitle.parameters;

<para>

<variablelist>

&gd.image.description;

&gd.font.description;

<varlistentry>

<term><parameter>x</parameter></term>

<listitem>

<para>

左上角的 x 坐标。

</para>

</listitem>

</varlistentry>

<varlistentry>

<term><parameter>y</parameter></term>

<listitem>

<para>

左上角的 y 坐标。

</para>

</listitem>

</varlistentry>

<varlistentry>

<term><parameter>string</parameter></term>

<listitem>

<para>

要写入的字符串。

</para>

</listitem>

</varlistentry>

<varlistentry>

<term><parameter>color</parameter></term>

<listitem>

<para>

&gd.identifier.color;

</para>

</listitem>

</varlistentry>

</variablelist>

</para>

</refsect1>

<refsect1 role="returnvalues">

&reftitle.returnvalues;

<para>

&return.true.always;

</para>

</refsect1>

<refsect1 role="changelog">

&reftitle.changelog;

<informaltable>

<tgroup cols="2">

<thead>

<row>

<entry>&Version;</entry>

<entry>&Description;</entry>

</row>

</thead>

<tbody>

&gd.changelog.gdfont-instance;

&gd.changelog.image-param;

</tbody>

</tgroup>

</informaltable>

</refsect1>

<refsect1 role="examples">

&reftitle.examples;

<para>

<example>

<title><function>imagestring</function> 示例</title>

<programlisting role="php">

<![CDATA[

<?php

// 创建 100*30 图像

$im = imagecreate(100, 30);

// 白色背景和蓝色文字

$bg = imagecolorallocate($im, 255, 255, 255);

$textcolor = imagecolorallocate($im, 0, 0, 255);

// 写入字符串到左上角

imagestring($im, 5, 0, 0, 'Hello world!', $textcolor);

// 输出图像

header('Content-type: image/png');

imagepng($im);

?>

]]>

</programlisting>

&example.outputs.similar;

<mediaobject>

<alt>示例输出：imagestring()</alt>

<imageobject>

<imagedata fileref="en/reference/image/figures/imagestring.png"/>

</imageobject>

</mediaobject>

</example>

</para>

</refsect1>

<refsect1 role="seealso">

&reftitle.seealso;

<simplelist>

<member><function>imagestringup</function></member>

<member><function>imageloadfont</function></member>

<member><function>imagettftext</function></member>

</simplelist>

</refsect1>

</refentry>

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