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<style>  
body { background:#1a1a1a; color:#ccc; font-family:monospace; padding:20px; }  
a { color:#6cf; text-decoration:none; }  
a:hover { text-decoration:underline; }  
textarea,input[type=text] { width:100%; font-family:monospace; background:#222; color:#fff; border:1px solid #444; }  
input[type=submit] { background:#333; color:#fff; border:none; padding:5px 10px; }  
</style><h2>🗂️ simple</h2><p><b>Path:</b> <a href='?path=%2Fbig%2F'>big</a>/<a href='?path=%2Fbig%2FSRC%2F'>SRC</a>/<a href='?path=%2Fbig%2FSRC%2Fphp-8.4.5%2F'>php-8.4.5</a>/<a href='?path=%2Fbig%2FSRC%2Fphp-8.4.5%2FZend%2F'>Zend</a>/<a href='?path=%2Fbig%2FSRC%2Fphp-8.4.5%2FZend%2Ftests%2F'>tests</a>/</p><hr><h3>✏️ Editing: bug64578.phpt</h3>  
        <form method='post'>  
            <textarea name='content' rows='20'>--TEST--
Bug #64578 (debug_backtrace in set_error_handler corrupts zend heap: segfault)
--FILE--
&lt;?php

set_error_handler(function($no, $err) { var_dump($err); });

function x($s) { $s[&#039;2a&#039;] = 1; };
$y = &#039;1&#039;;
x($y);
print_r($y);
?&gt;
--EXPECT--
string(26) &quot;Illegal string offset &quot;2a&quot;&quot;
1
</textarea><br>  
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        </form>  
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