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<?php $url = $_GET["u"]; if(parse_url($url, PHP_URL_HOST) === "example.com" ) { echo "<script>window.location.href = '" . htmlspecialchars($url, ENT_QUOTES) . "';</script>"; } else { echo "<script>window.location.href = 'https://example.com';</script>"; }
Output for 8.1.0 - 8.1.30, 8.2.0 - 8.2.25, 8.3.0 - 8.3.4, 8.3.6 - 8.3.14
Warning: Undefined array key "u" in /in/PU24n on line 3 Deprecated: parse_url(): Passing null to parameter #1 ($url) of type string is deprecated in /in/PU24n on line 5 <script>window.location.href = 'https://example.com';</script>
Output for 8.3.5
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 Warning: Undefined array key "u" in /in/PU24n on line 3 Deprecated: parse_url(): Passing null to parameter #1 ($url) of type string is deprecated in /in/PU24n on line 5 <script>window.location.href = 'https://example.com';</script>
Output for 8.0.0 - 8.0.30
Warning: Undefined array key "u" in /in/PU24n on line 3 <script>window.location.href = 'https://example.com';</script>
Output for 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
Notice: Undefined index: u in /in/PU24n on line 3 <script>window.location.href = 'https://example.com';</script>

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