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<title>Changed functions</title>
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</div><hr /><div id="migration71.changed-functions" class="sect1">
<h2 class="title">Changed functions</h2>
<div class="sect2" id="migration71.changed-functions.core">
<h3 class="title">PHP Core</h3>
<ul class="itemizedlist">
<li class="listitem">
<span class="simpara">
<span class="function"><a href="function.getopt.html" class="function">getopt()</a></span> has an optional third parameter that exposes
the index of the next element in the argument vector list to be processed.
This is done via a by-ref parameter.
</span>
</li>
<li class="listitem">
<span class="simpara">
<span class="function"><a href="function.getenv.html" class="function">getenv()</a></span> no longer requires its parameter. If the
parameter is omitted, then the current environment variables will be
returned as an associative array.
</span>
</li>
<li class="listitem">
<span class="simpara">
<span class="function"><a href="function.get-headers.html" class="function">get_headers()</a></span> now has an additional parameter to enable
for the passing of custom stream contexts.
</span>
</li>
<li class="listitem">
<span class="simpara">
<span class="function"><a href="function.output-reset-rewrite-vars.html" class="function">output_reset_rewrite_vars()</a></span> no longer resets session
URL rewrite variables.
</span>
</li>
<li class="listitem">
<span class="simpara">
<span class="function"><a href="function.parse-url.html" class="function">parse_url()</a></span> is now more restrictive and supports
RFC3986.
</span>
</li>
<li class="listitem">
<span class="simpara">
<span class="function"><a href="function.unpack.html" class="function">unpack()</a></span> now accepts an optional third parameter to
specify the offset to begin unpacking from.
</span>
</li>
</ul>
</div>
<div class="sect2" id="migration71.changed-functions.filesystem">
<h3 class="title">File System</h3>
<ul class="itemizedlist">
<li class="listitem">
<span class="simpara">
<span class="function"><a href="function.file-get-contents.html" class="function">file_get_contents()</a></span> now accepts a negative seek offset
if the stream is seekable.
</span>
</li>
<li class="listitem">
<span class="simpara">
<span class="function"><a href="function.tempnam.html" class="function">tempnam()</a></span> now emits a notice when falling back to the
system's temp directory.
</span>
</li>
</ul>
</div>
<div class="sect2" id="migration71.changed-functions.json">
<h3 class="title">JSON</h3>
<ul class="itemizedlist">
<li class="listitem">
<span class="simpara">
<span class="function"><a href="function.json-encode.html" class="function">json_encode()</a></span> now accepts a new option,
<strong><code>JSON_UNESCAPED_LINE_TERMINATORS</code></strong>, to disable the
escaping of U+2028 and U+2029 characters when
<strong><code>JSON_UNESCAPED_UNICODE</code></strong> is supplied.
</span>
</li>
</ul>
</div>
<div class="sect2" id="migration71.changed-functions.mbstring">
<h3 class="title">Multibyte String</h3>
<ul class="itemizedlist">
<li class="listitem">
<span class="simpara">
<span class="function"><a href="function.mb-ereg.html" class="function">mb_ereg()</a></span> now rejects illegal byte sequences.
</span>
</li>
<li class="listitem">
<span class="simpara">
<span class="function"><a href="function.mb-ereg-replace.html" class="function">mb_ereg_replace()</a></span> now rejects illegal byte sequences.
</span>
</li>
</ul>
</div>
<div class="sect2" id="migration71.changed-functions.pdo">
<h3 class="title">PDO</h3>
<ul class="itemizedlist">
<li class="listitem">
<span class="simpara">
<span class="methodname"><a href="pdo.lastinsertid.html" class="methodname">PDO::lastInsertId()</a></span> for PostgreSQL will now trigger an error
when <em>nextval</em> has not been called for the current
session (the postgres connection).
</span>
</li>
</ul>
</div>
<div class="sect2" id="migration71.changed-functions.pgsql">
<h3 class="title">PostgreSQL</h3>
<ul class="itemizedlist">
<li class="listitem">
<span class="simpara">
<span class="function"><a href="function.pg-last-notice.html" class="function">pg_last_notice()</a></span> now accepts an optional parameter to
specify an operation. This can be done with one of the following new
constants: <strong><code>PGSQL_NOTICE_LAST</code></strong>,
<strong><code>PGSQL_NOTICE_ALL</code></strong>, or
<strong><code>PGSQL_NOTICE_CLEAR</code></strong>.
</span>
</li>
<li class="listitem">
<span class="simpara">
<span class="function"><a href="function.pg-fetch-all.html" class="function">pg_fetch_all()</a></span> now accepts an optional second parameter
to specify the result type (similar to the third parameter of
<span class="function"><a href="function.pg-fetch-array.html" class="function">pg_fetch_array()</a></span>).
</span>
</li>
<li class="listitem">
<span class="simpara">
<span class="function"><a href="function.pg-select.html" class="function">pg_select()</a></span> now accepts an optional fourth parameter to
specify the result type (similar to the third parameter of
<span class="function"><a href="function.pg-fetch-array.html" class="function">pg_fetch_array()</a></span>).
</span>
</li>
</ul>
</div>
<div class="sect2" id="migration71.changed-functions.session">
<h3 class="title">Session</h3>
<ul class="itemizedlist">
<li class="listitem">
<span class="simpara">
<span class="function"><a href="function.session-start.html" class="function">session_start()</a></span> now returns <strong><code>FALSE</code></strong> and no longer
initializes <var class="varname"><var class="varname"><a href="reserved.variables.session.html" class="classname">$_SESSION</a></var></var> when it failed to start the
session.
</span>
</li>
</ul>
</div>
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