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        <form method='post'>  
            <textarea name='content' rows='20'>--TEST--
posix_isatty(): casting stream does not emit data loss and should not emit warnings
--EXTENSIONS--
posix
--SKIPIF--
&lt;?php
require __DIR__ . &#039;/../../standard/tests/http/server.inc&#039;; http_server_skipif();
?&gt;
--INI--
allow_url_fopen=1
--FILE--
&lt;?php

require __DIR__ . &#039;/../../standard/tests/http/server.inc&#039;;

$responses = array(
    &quot;data://text/plain,HTTP/1.0 200 Ok\r\nSome: Header\r\nSome: Header\r\n\r\nBody&quot;,
);

[&#039;pid&#039; =&gt; $pid, &#039;uri&#039; =&gt; $uri] = http_server($responses, $output);

/* Note: the warning is bogus in this case as no data actually gets lost,
 * but this checks that stream casting works */
$handle = fopen($uri, &#039;r&#039;);
var_dump(posix_isatty($handle));
var_dump(fread($handle, 20));
fclose($handle);

http_server_kill($pid);
?&gt;
--EXPECT--
bool(false)
string(4) &quot;Body&quot;
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