note 37933 deleted from function.highlight-file by aidan

Note Submitter: behzad at delphiarea dot com ---- Let me read your mind: - You want to add line numbers to highlighted source code. - You hate Output Buffering; you love speed. - You want to serve a valid XHTML code. - You want a function to return the highlighted code, instead of printing it out. Let me present my solution: ========================================== FUNCTION ========================================== <?php function get_sourcecode($filename, $first_line_num=1, $num_color="#999") { // Get highlighted code $html_code = highlight_file($filename, TRUE); // Bookmark #1: // Remove the first "<code>" tag from "$html_code" (if any) if (substr($html_code, 0, 6) == "<code>") { $html_code = substr($html_code, 6, strlen($html_code)); } // Replacement-map to replace deprecated "<font>" tag with "<span>" $xhtml_convmap = array( '<font' => '<span', '</font>' => '</span>', 'color="' => 'style="color:' ); // Replace "<font>" tags with "<span>" tags, to generate a valid XHTML code $html_code = strtr($html_code, $xhtml_convmap); ### Okay, Now we have a valid XHTML code ### Let's add the line numbers... $arr_html_code = explode("<br />", $html_code); $total_lines = count($arr_html_code); $retval = ""; $line_counter = 0; $last_line_num = $first_line_num + $total_lines; foreach ($arr_html_code as $html_line) { // Calculate number of current line $current_line = $first_line_num + $line_counter; // Append new line to "$retval" $retval .= str_repeat("&nbsp;", strlen($last_line_num) - strlen($current_line) ) . "<span style=\"color:{$num_color}\">{$current_line}: </span>" . $html_line . "<br />" ; $line_counter++; } // end: foreach $retval = "<code>" . $retval; // Why? remember Bookmark #1, that I removed the tag "<code>" return $retval; } // end: get_sourcecode ?> ========================================== EXAMPLES: ========================================== <?php // Print source code of "index.php" by default options echo get_sourcecode("index.php"); // Print source code of "index.php", set the first-line's number to 0. echo get_sourcecode("index.php", 0); // Print source code of "index.php", set the first-line's number to 0, and use color "#9966FF" to highlight line numbers echo get_sourcecode("index.php", 0, "#96F"); ?> ========================================== TIP: ========================================== Look at the 3rd example, note that I used "#96F" instead of "#9966FF". Why? Both has the same effect in CSS-compatible browsers, but "#96F" returns a smaller result. We need SPEED! How? In CSS, "#000000", "black", and "#000" are equal. Also, "#ccddff" can be converted to "#cdf". Got it? ========================================== AmirBehzad Eslami Spell of Web - http://www.spellofweb.com