php-doc-en/appendices/migration81/constants.xml

<?xml version="1.0" encoding="utf-8"?>
<sect1 xml:id="migration81.constants" xmlns:xlink="http://www.w3.org/1999/xlink">
 <title>New Global Constants</title>

 <sect2 xml:id="migration81.constants.curl">
  <title>cURL</title>

  <itemizedlist>
   <listitem>
    <simpara><constant>CURLOPT_DOH_URL</constant></simpara>
   </listitem>
   <listitem>
    <simpara><constant>CURLOPT_ISSUERCERT_BLOB</constant></simpara>
   </listitem>
   <listitem>
    <simpara><constant>CURLOPT_PROXY_ISSUERCERT</constant></simpara>
   </listitem>
   <listitem>
    <simpara><constant>CURLOPT_PROXY_ISSUERCERT_BLOB</constant></simpara>
   </listitem>
   <listitem>
    <simpara><constant>CURLOPT_PROXY_SSLCERT_BLOB</constant></simpara>
   </listitem>
   <listitem>
    <simpara><constant>CURLOPT_PROXY_SSLKEY_BLOB</constant></simpara>
   </listitem>
   <listitem>
    <simpara><constant>CURLOPT_SSLCERT_BLOB</constant></simpara>
   </listitem>
   <listitem>
    <simpara><constant>CURLOPT_SSLKEY_BLOB</constant></simpara>
   </listitem>
  </itemizedlist>
 </sect2>

 <sect2 xml:id="migration81.constants.gd">
  <title>GD</title>

  <itemizedlist>
   <listitem>
    <simpara><constant>IMG_AVIF</constant></simpara>
   </listitem>
   <listitem>
    <simpara><constant>IMG_WEBP_LOSSLESS</constant></simpara>
   </listitem>
  </itemizedlist>
 </sect2>

 <sect2 xml:id="migration81.constants.mysqli">
  <title>MySQLi</title>

  <itemizedlist>
   <listitem>
    <simpara><constant>MYSQLI_REFRESH_REPLICA</constant></simpara>
    <para>
     This constant has been added as a replacement for
     <constant>MYSQLI_REFRESH_SLAVE</constant>,
     in line with an upstream change in MySQL.
     The old constant is still available for backwards-compatibility reasons,
     but may be deprecated/removed in the future.
    </para>
   </listitem>
  </itemizedlist>
 </sect2>

 <sect2 xml:id="migration81.constants.posix">
  <title>POSIX</title>

  <itemizedlist>
   <listitem>
    <simpara><constant>POSIX_RLIMIT_KQUEUES</constant></simpara>
   </listitem>
   <listitem>
    <simpara><constant>POSIX_RLIMIT_NPTS</constant></simpara>
   </listitem>
  </itemizedlist>
 </sect2>

 <sect2 xml:id="migration81.constants.sockets">
  <title>Sockets</title>

  <para>
   The following socket options are now defined if they are supported:
  </para>
  <itemizedlist>
   <listitem>
    <simpara><constant>SO_ACCEPTFILTER</constant></simpara>
   </listitem>
   <listitem>
    <simpara><constant>SO_DONTTRUNC</constant></simpara>
   </listitem>
   <listitem>
    <simpara><constant>SO_WANTMORE</constant></simpara>
   </listitem>
   <listitem>
    <simpara><constant>SO_MARK</constant></simpara>
   </listitem>
   <listitem>
    <simpara><constant>TCP_DEFER_ACCEPT</constant></simpara>
   </listitem>
  </itemizedlist>
 </sect2>

 <sect2 xml:id="migration81.constants.sodium">
  <title>Sodium</title>

  <itemizedlist>
   <listitem>
    <simpara><constant>SODIUM_CRYPTO_STREAM_XCHACHA20_NONCEBYTES</constant></simpara>
   </listitem>
   <listitem>
    <simpara><constant>SODIUM_CRYPTO_STREAM_XCHACHA20_KEYBYTES</constant></simpara>
   </listitem>
   <listitem>
    <simpara><constant>SODIUM_CRYPTO_SCALARMULT_RISTRETTO255_BYTES</constant></simpara>
   </listitem>
   <listitem>
    <simpara><constant>SODIUM_CRYPTO_SCALARMULT_RISTRETTO255_SCALARBYTES</constant></simpara>
   </listitem>
   <listitem>
    <simpara><constant>SODIUM_CRYPTO_CORE_RISTRETTO255_BYTES</constant></simpara>
   </listitem>
   <listitem>
    <simpara><constant>SODIUM_CRYPTO_CORE_RISTRETTO255_HASHBYTES</constant></simpara>
   </listitem>
   <listitem>
    <simpara><constant>SODIUM_CRYPTO_CORE_RISTRETTO255_SCALARBYTES</constant></simpara>
   </listitem>
   <listitem>
    <simpara><constant>SODIUM_CRYPTO_CORE_RISTRETTO255_NONREDUCEDSCALARBYTES</constant></simpara>
   </listitem>
  </itemizedlist>
 </sect2>

 <sect2 xml:id="migration81.constants.tokenizer">
  <title>Tokenizer</title>

  <itemizedlist>
   <listitem>
    <simpara><constant>T_READONLY</constant></simpara>
   </listitem>
  </itemizedlist>
 </sect2>

</sect1>
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