mirror of
https://github.com/sigmasternchen/php-doc-en
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git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@337270 c90b9560-bf6c-de11-be94-00142212c4b1
143 lines
3.9 KiB
XML
143 lines
3.9 KiB
XML
<?xml version="1.0" encoding="utf-8"?>
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<!-- $Revision$ -->
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<sect1 xml:id="migration56.incompatible">
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<title>Backward incompatible changes</title>
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<simpara>
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Although most existing PHP 5 code should work without changes, please take
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note of some backward incompatible changes:
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</simpara>
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<sect2 xml:id="migration56.incompatible.array-keys">
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<title>Array keys won't be overwritten when defining an array as a property of a class via an array literal</title>
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<para>
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Previously, arrays declared as class properties which mixed explicit and
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implicit keys could have array elements silently overwritten if an explicit
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key was the same as a sequential implicit key. For example:
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</para>
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<informalexample>
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<programlisting role="php">
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<![CDATA[
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<?php
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class C {
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const ONE = 1;
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public $array = [
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self::ONE => 'foo',
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'bar',
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'quux',
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];
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}
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var_dump((new C)->array);
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?>
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]]>
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</programlisting>
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&example.outputs.55;
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<screen>
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<![CDATA[
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array(2) {
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[0]=>
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string(3) "bar"
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[1]=>
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string(4) "quux"
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}
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]]>
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</screen>
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&example.outputs.56;
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<screen>
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<![CDATA[
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array(3) {
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[1]=>
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string(3) "foo"
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[2]=>
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string(3) "bar"
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[3]=>
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string(4) "quux"
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}
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]]>
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</screen>
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</informalexample>
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</sect2>
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<sect2 xml:id="migration56.incompatible.json-decode">
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<title><function>json_decode</function> strictness</title>
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<para>
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<function>json_decode</function> now rejects non-lowercase variants of the
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JSON literals <literal>true</literal>, <literal>false</literal> and
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<literal>null</literal> at all times, as per the JSON specification, and
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sets <function>json_last_error</function> accordingly. Previously, inputs
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to <function>json_decode</function> that consisted solely of one of these
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values in upper or mixed case were accepted.
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</para>
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<para>
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This change will only affect cases where invalid JSON was being passed to
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<function>json_decode</function>: valid JSON input is unaffected and will
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continue to be parsed normally.
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</para>
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</sect2>
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<sect2 xml:id="migration56.incompatible.peer-verification">
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<title>Stream wrappers now verify peer certificates and host names by default when using SSL/TLS</title>
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&migration56.openssl.peer-verification;
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</sect2>
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<sect2 xml:id="migration56.incompatible.gmp">
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<title><link linkend="book.gmp">GMP</link> resources are now objects</title>
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<para>
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<link linkend="book.gmp">GMP</link> resources are now objects. The
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functional API implemented in the GMP extension has not changed, and code
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should run unmodified unless it checks explicitly for a resource using
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<function>is_resource</function> or similar.
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</para>
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</sect2>
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<sect2 xml:id="migration56.incompatible.mcrypt">
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<title><link linkend="book.mcrypt">Mcrypt</link> functions now require valid keys and IVs</title>
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<para>
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<function>mcrypt_encrypt</function>, <function>mcrypt_decrypt</function>,
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<function>mcrypt_cbc</function>, <function>mcrypt_cfb</function>,
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<function>mcrypt_ecb</function>, <function>mcrypt_generic</function> and
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<function>mcrypt_ofb</function> will no longer accept keys or IVs with
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incorrect sizes, and block cipher modes that require IVs will now fail if
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an IV isn't provided.
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</para>
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</sect2>
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<sect2 xml:id="migration56.incompatible.curl">
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<title><link linkend="book.curl">cURL</link> file uploads</title>
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<para>
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Uploads using the @file syntax now require CURLOPT_SAFE_UPLOAD to be set to
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&false;. <classname>CURLFile</classname> should be used instead.
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</para>
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</sect2>
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</sect1>
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<!-- Keep this comment at the end of the file
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Local variables:
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mode: sgml
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sgml-omittag:t
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sgml-shorttag:t
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sgml-minimize-attributes:nil
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sgml-always-quote-attributes:t
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sgml-indent-step:1
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sgml-indent-data:t
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indent-tabs-mode:nil
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sgml-parent-document:nil
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sgml-default-dtd-file:"~/.phpdoc/manual.ced"
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sgml-exposed-tags:nil
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sgml-local-catalogs:nil
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sgml-local-ecat-files:nil
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End:
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vim600: syn=xml fen fdm=syntax fdl=2 si
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vim: et tw=78 syn=sgml
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vi: ts=1 sw=1
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-->
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