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<?php $text = null; $c = 1; $r = preg_replace_callback('@/(<p( [^>]+)?>)/i@', function ($res) { global $c; return '<p'.$res[2].' id="'.intval($c++).'">'; }, $text); $r = preg_replace('/(<p.*?)id="'.($c-1).'"(>)/i', '\1id="Last"\2', $r); $text = $r; echo $text;
Output for 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Deprecated: preg_replace_callback(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /in/ehqRC on line 4
Output for 8.1.0 - 8.1.28
Deprecated: preg_replace_callback(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /in/ehqRC on line 7
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.7 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.10, 7.2.0 - 7.2.33, 7.3.12 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
Parse error: syntax error, unexpected T_FUNCTION in /in/ehqRC on line 4
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_FUNCTION in /in/ehqRC on line 4
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/ehqRC on line 4
Process exited with code 255.

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