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git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@129091 c90b9560-bf6c-de11-be94-00142212c4b1
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1 changed files with 14 additions and 11 deletions
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<?xml version="1.0" encoding="iso-8859-1"?>
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<!-- $Revision: 1.3 $ -->
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<!-- $Revision: 1.4 $ -->
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<!-- splitted from ./en/functions/image.xml, last change in rev 1.36 -->
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<refentry id="function.imagesavealpha">
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<refnamediv>
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<refname>imagesavealpha</refname>
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<refpurpose>Set the flag to save full alpha channel information (as opposed to
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single-color transparency) when saving PNG images.</refpurpose>
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<refpurpose>
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Set the flag to save full alpha channel information (as opposed to
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single-color transparency) when saving PNG images.
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</refpurpose>
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</refnamediv>
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<refsect1>
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<title>Description</title>
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<type>bool</type><methodname>imagesavealpha</methodname>
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<methodparam><type>resource</type><parameter>image</parameter></methodparam>
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<methodparam><type>bool</type><parameter>saveflag</parameter></methodparam>
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</methodsynopsis>
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</methodsynopsis>
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<para>
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<function>imagesavealpha</function> sets the flat to attempt to save full alpha
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channel information (as opposed to single-color transparency) when saving PNG images.
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<function>imagesavealpha</function> sets the flat to attempt to save
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full alpha channel information (as opposed to single-color transparency)
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when saving PNG images.
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</para>
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<para>
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You have to unset alphablending
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(<literal>imagealphaplending($im,&false;)</literal>), to use it.
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You have to unset alphablending
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(<literal>imagealphaplending($im,&false;)</literal>), to use it.
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</para>
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<para>
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Alpha channel is not supported by all browsers, if you have problem with
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your browser, try to load your script with a alpha channel compliant
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browser, e.g. latest Mozilla.
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Alpha channel is not supported by all browsers, if you have problem with
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your browser, try to load your script with a alpha channel compliant
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browser, e.g. latest Mozilla.
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</para>
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<para>
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See also <function>imagealphablending</function>.
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