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run code in 150+ php & hhvm versions
Bugs & Features
<?php function fixtags($text){ $text = htmlspecialchars($text); $text = preg_replace("/=/", "=\"\"", $text); $text = preg_replace("/&quot;/", "&quot;\"", $text); $tags = "/&lt;(\/|)(\w*)(\ |)(\w*)([\\\=]*)(?|(\")\"&quot;\"|)(?|(.*)?&quot;(\")|)([\ ]?)(\/|)&gt;/i(\&lt;h[1-9]&gt;)"; $replacement = "<$1$2$3$4$5$6$7$8$9$10>"; $text = preg_replace($tags, $replacement, $text); $text = preg_replace("/=\"\"/", "=", $text); return $text; }?> <?php echo fixtags(' content of website ... <h1> Heading (?= 1 for largest to 6 for smallest, eg h1) </h1> <p> Paragraph of Text </p> <b> Bold Text </b> <a href="url"> ... </a> <i> Italic Text </i> <u> Underline Text </u> <strike> Strikeout </strike> <sup> Superscript - Smaller text placed below normal text </sup> <sub> ... </sub>');
Output for 4.3.11 - 5.6.28, 7.0.0 - 7.1.0
Warning: preg_replace(): Unknown modifier '(' in /in/dj77Y on line 9
Output for hhvm-3.10.0 - 3.13.2
Warning: Unknown modifier '(': [/&lt;(\/|)(\w*)(\ |)(\w*)([\\=]*)(?|(")"&quot;"|)(?|(.*)?&quot;(")|)([\ ]?)(\/|)&gt;/i(\&lt;h[1-9]&gt;)] in /in/dj77Y on line 9
Output for 4.3.0 - 4.3.10
Warning: Unknown modifier '(' in /in/dj77Y on line 9