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git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@129732 c90b9560-bf6c-de11-be94-00142212c4b1
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Marcus Boerger 2003-06-01 15:10:09 +00:00
parent 3870c76594
commit 7912f8465b
1 changed files with 14 additions and 1 deletions
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15
reference/info/functions/version-compare.xml
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@ -1,5 +1,5 @@
<?xml version="1.0" encoding="iso-8859-1"?>
<!-- $Revision: 1.2 $ -->
<!-- $Revision: 1.3 $ -->
<!-- splitted from ./en/functions/info.xml, last change in rev 1.2 -->
<refentry id="function.version-compare">
<refnamediv>
@ -29,6 +29,19 @@
version is lower than the second, 0 if they are equal, and +1 if
the second is lower.
</para>
<para>
The function first replaces <literal>_</literal>, <literal>-</literal>
and <literal>+</literal> with a dot <literal>.</literal> in the version
strings and also inserts dots <literal>.</literal> before and after any
non number so that for example '4.3.2RC1' becomes '4.3.2.RC.1'. Then it
splits the results like if you were using explode('.',$ver). The it
compares the parts startinig from left to right. If a part contains
special version strings these are handled in the following order:
<literal>dev</literal> &lt; <literal>alpha</literal> &lt;
<literal>a</literal> &lt; <literal>beta</literal> &lt;
<literal>b</literal> &lt; <literal>RC</literal> &lt;
<literal>pl</literal>.
</para>
<para>
If you specify the third optional <parameter>operator</parameter>
argument, you can test for a particular relationship. The