cvs: phpdoc /en/reference/exif/functions exif-read-data.xml

dams Tue Sep 28 11:52:35 2004 EDT Modified files: /phpdoc/en/reference/exif/functions exif-read-data.xml Log: emphasis -> literal http://cvs.php.net/diff.php/phpdoc/en/reference/exif/functions/exif-read-data.xml?r1=1.4&r2=1.5&ty=u Index: phpdoc/en/reference/exif/functions/exif-read-data.xml diff -u phpdoc/en/reference/exif/functions/exif-read-data.xml:1.4 phpdoc/en/reference/exif/functions/exif-read-data.xml:1.5 --- phpdoc/en/reference/exif/functions/exif-read-data.xml:1.4 Sun Sep 12 14:04:59 2004 +++ phpdoc/en/reference/exif/functions/exif-read-data.xml Tue Sep 28 11:52:34 2004 @@ -1,10 +1,13 @@ <?xml version="1.0" encoding="iso-8859-1"?> -<!-- $Revision: 1.4 $ --> +<!-- $Revision: 1.5 $ --> <!-- splitted from ./en/functions/image.xml, last change in rev 1.78 --> <refentry id="function.exif-read-data"> <refnamediv> <refname>exif_read_data</refname> - <refpurpose>Reads the <acronym>EXIF</acronym> headers from <acronym>JPEG</acronym> or <acronym>TIFF</acronym></refpurpose> + <refpurpose> + Reads the <acronym>EXIF</acronym> headers from + <acronym>JPEG</acronym> or <acronym>TIFF</acronym> + </refpurpose> </refnamediv> <refsect1> &reftitle.description; @@ -16,7 +19,7 @@ <methodparam choice="opt"><type>bool</type><parameter>thumbnail</parameter></methodparam> </methodsynopsis> <para> - The <function>exif_read_data</function> function reads the + <function>exif_read_data</function> function reads the <acronym>EXIF</acronym> headers from a <acronym>JPEG</acronym> or <acronym>TIFF</acronym> image file. This way you can read meta data generated by digital cameras. @@ -28,19 +31,19 @@ a specific Exif header being present. </para> <para> - <emphasis>Height</emphasis> and <emphasis>Width</emphasis> are computed the + <literal>Height</literal> and <literal>Width</literal> are computed the same way <function>getimagesize</function> does so their values must not be - part of any header returned. Also, <emphasis>html</emphasis> is a + part of any header returned. Also, <literal>html</literal> is a height/width text string to be used inside normal <acronym>HTML</acronym>. </para> <para> When an Exif header contains a Copyright note, this itself can contain two values. As the solution is inconsistent in the Exif 2.10 standard, the COMPUTED - section will return both entries <emphasis>Copyright.Photographer</emphasis> - and <emphasis>Copyright.Editor</emphasis> while the IFD0 sections contains + section will return both entries <literal>Copyright.Photographer</literal> + and <literal>Copyright.Editor</literal> while the IFD0 sections contains the byte array with the NULL character that splits both entries. Or just the first entry if the datatype was wrong (normal behaviour of Exif). The - COMPUTED will also contain the entry <emphasis>Copyright</emphasis> which + COMPUTED will also contain the entry <literal>Copyright</literal> which is either the original copyright string, or a comma separated list of the photo and editor copyright. </para> @@ -48,8 +51,8 @@ The tag UserComment has the same problem as the Copyright tag. It can store two values. First the encoding used, and second the value itself. If so the IFD section only contains the encoding or a byte array. The COMPUTED section - will store both in the entries <emphasis>UserCommentEncoding</emphasis> and - <emphasis>UserComment</emphasis>. The entry <emphasis>UserComment</emphasis> + will store both in the entries <literal>UserCommentEncoding</literal> and + <literal>UserComment</literal>. The entry <literal>UserComment</literal> is available in both cases so it should be used in preference to the value in IFD0 section. </para> @@ -139,8 +142,8 @@ <listitem> <para> Specifies whether or not each section becomes an array. The - <parameter>sections</parameter> <emphasis>COMPUTED</emphasis>, - <emphasis>THUMBNAIL</emphasis>, and <emphasis>COMMENT</emphasis> + <parameter>sections</parameter> <literal>COMPUTED</literal>, + <literal>THUMBNAIL</literal>, and <literal>COMMENT</literal> always become arrays as they may contain values whose names conflict with other sections. </para> @@ -184,7 +187,7 @@ <entry> Can read all embedded <acronym>IFD</acronym> data including arrays (returned as such). Also the size of an embedded thumbnail is - returned in a <emphasis>THUMBNAIL</emphasis> subarray, and can + returned in a <literal>THUMBNAIL</literal> subarray, and can return thumbnails in <acronym>TIFF</acronym> format. Also, there is no longer a maximum length for returned values (not until the memory limit has been reached)