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Minor improvements to migration guide.

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git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@323668 c90b9560-bf6c-de11-be94-00142212c4b1
This commit is contained in:
Nikita Popov 2012-02-29 16:39:41 +00:00
parent 6c07266b1e
commit 0b24b3ede7
1 changed files with 26 additions and 18 deletions
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44
appendices/migration54.xml
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@ -72,20 +72,21 @@
<simpara>
The <link linkend="control-structures.break"><literal>break</literal></link>
and <link linkend="control-structures.continue"><literal>continue</literal></link>
keywords don't accept variable argument anymore. Consider using
a static constant argument.
statements don't accept variable arguments anymore, i.e. writing
<literal>break 1 + foo() * $bar;</literal> is not possible. You can obviously still use
static arguments, like <literal>break 2;</literal>.
</simpara>
</listitem>
<listitem>
<simpara>
<link linkend="features.safe-mode"><literal>Safe mode</literal></link> is no
longer supported. Any application that rely on safe mode may need
adjustements in term of security.
longer supported. Any applications that rely on safe mode may need
adjustements in terms of security.
</simpara>
</listitem>
<listitem>
<simpara>
Salsa10 and Salsa20 hash algorithms have been removed.
The Salsa10 and Salsa20 <link linkend="book.hash">hash algorithms</link> have been removed.
</simpara>
</listitem>
<listitem>
@ -96,53 +97,60 @@
</simpara>
</listitem>
<listitem>
<simpara>
<link linkend="security.magicquotes">Magic quotes</link> has been removed. Applications relying
on this feature need to be updated to avoid security issues.
</simpara>
<simpara>
<function>get_magic_quotes_gpc</function> and <function>get_magic_quotes_runtime</function>
now always return false. <function>set_magic_quotes_runtime</function> raises an
<constant>E_CORE_ERROR</constant>
<constant>E_CORE_ERROR</constant>.
</simpara>
</listitem>
<listitem>
<simpara>
Non-numeric string offsets - e.g. $a['foo'] where $a is a string - now return
false on <function>isset</function> and true on <function>empty</function>, and produce warning
if trying to use them. Offsets of types double, bool and null produce notice. Numeric strings ($a['2'])
still work as before. Note that offsets like '12.3' and '5 and a half' are considered non-numeric
and produce warning, but are converted to 12 and 5 respectively for BC reasons.
Non-numeric string offsets - e.g. <literal>$a['foo']</literal> where $a is a string - now return
false on <function>isset</function> and true on <function>empty</function>, and produce a warning
if you try to use them. Offsets of types double, bool and null produce a notice. Numeric strings
(e.g. <literal>$a['2']</literal>) still work as before. Note that offsets like <literal>'12.3'</literal>
and <literal>'5 foobar'</literal> are considered non-numeric and produce a warning, but are converted
to 12 and 5 respectively for BC reasons.
</simpara>
</listitem>
<listitem>
<simpara>
Turning null, false or empty string into an object by adding a property
Turning &null;, &false; or an empty string into an object by adding a property
will now emit a warning instead of an <constant>E_STRICT</constant> error.
</simpara>
</listitem>
<listitem>
<simpara>
Converting array to string now will cause <constant>E_NOTICE</constant> warning.
Converting an array to string will now cause an <constant>E_NOTICE</constant>. The result of
the cast will still be <literal>"Array"</literal>.
</simpara>
</listitem>
<listitem>
<simpara>
Shadowing names of superglobals for parameter names now causes a fatal error.
Parameter names that shadow superglobals now cause a fatal error. This prohibits code like
<literal>function foo($_GET, $_POST) {}</literal>.
</simpara>
</listitem>
<listitem>
<simpara>
<function>array_combine</function> now returns <literal>array()</literal> instead of <literal>FALSE</literal>
<function>array_combine</function> now returns <literal>array()</literal> instead of &false;
when two empty arrays are provided as parameters.
</simpara>
</listitem>
<listitem>
<simpara>
<function>call_user_func_array</function> no longer allows call-time pass by reference.
<link linkend="language.references.pass">Call-time pass by reference</link> has been removed.
</simpara>
</listitem>
<listitem>
<simpara>
<function>htmlentities</function> now emits an <constant>E_STRICT</constant> warning when used with
asian characters, as in that case <function>htmlentities</function> has (and already had before this version)
the same functionality as <function>htmlspecialchars</function>.
asian character sets, as in that case <function>htmlentities</function> has (and already had before
this version) the same functionality as <function>htmlspecialchars</function>.
</simpara>
</listitem>
</itemizedlist>