Start/end tags
The first thing you probably will notice is that PHP's
start and end tags have changed. The old
? form has been replaced by three new possible
forms:
範例 C-1. Migration: old start/end tags
? echo "This is PHP/FI 2.0 code.\n"; ?
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As of version 2.0, PHP/FI also supports this variation:
範例 C-2. Migration: first new start/end
tags
? echo "This is PHP 3.0 code!\n"; ?
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Notice that the end tag now consists of a question mark and a
greater-than character instead of just greater-than. However,
if you plan on using XML on your server, you will get
problems with the first new variant, because PHP may try to
execute the XML markup in XML documents as PHP code. Because
of this, the following variation was introduced:
範例 C-3. Migration: second new start/end
tags
?php echo "This is PHP 3.0 code!\n"; ?
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Some people have had problems with editors that don't
understand the processing instruction tags at all. Microsoft
FrontPage is one such editor, and as a workaround for these,
the following variation was introduced as well:
範例 C-4. Migration: third new start/end
tags
script language="php"
echo "This is PHP 3.0 code!\n";
/script
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