Update docs to php 8.1 and fix curly brace array/string access fatal errors

Author: srh

docs/generate.sh

@@ -1,4 +1,4 @@
 #!/bin/bash
-cat js-index.md | php5 jsToPhp.php > php-index.md
+cat js-index.md | php8.1 jsToPhp.php > php-index.md
 cat php-patches.patch | patch php-index.md
-cat php-index.md | php5 mdToHtml.php > index.html 
+cat php-index.md | php8.1 mdToHtml.php > index.html 

docs/jparser-libs/jtokenizer.php

@@ -794,7 +794,7 @@ protected function _doHeaders_callback_setext($matches) {
 		if ($matches[2] == '-' && preg_match('{^-(?: |$)}', $matches[1]))
 			return $matches[0];
 
-		$level = $matches[2]{0} == '=' ? 1 : 2;
+		$level = $matches[2][0] == '=' ? 1 : 2;
 
 		# id attribute generation
 		$idAtt = $this->_generateIdFromHeaderValue($matches[1]);
@@ -1130,7 +1130,7 @@ protected function doItalicsAndBold($text) {
 				} else {
 					# Other closing marker: close one em or strong and
 					# change current token state to match the other
-					$token_stack[0] = str_repeat($token{0}, 3-$token_len);
+					$token_stack[0] = str_repeat($token[0], 3-$token_len);
 					$tag = $token_len == 2 ? "strong" : "em";
 					$span = $text_stack[0];
 					$span = $this->runSpanGamut($span);
@@ -1155,7 +1155,7 @@ protected function doItalicsAndBold($text) {
 				} else {
 					# Reached opening three-char emphasis marker. Push on token 
 					# stack; will be handled by the special condition above.
-					$em = $token{0};
+					$em = $token[0];
 					$strong = "$em$em";
 					array_unshift($token_stack, $token);
 					array_unshift($text_stack, '');
@@ -1520,9 +1520,9 @@ protected function handleSpanToken($token, &$str) {
 	# Handle $token provided by parseSpan by determining its nature and 
 	# returning the corresponding value that should replace it.
 	#
-		switch ($token{0}) {
+		switch ($token[0]) {
 			case "\\":
-				return $this->hashPart("&#". ord($token{1}). ";");
+				return $this->hashPart("&#". ord($token[1]). ";");
 			case "`":
 				# Search for end marker in remaining text.
 				if (preg_match('/^(.*?[^`])'.preg_quote($token).'(?!`)(.*)$/sm', 

docs/php-markdown/Michelf/Markdown.php

@@ -156,9 +156,9 @@ protected function doExtraAttributes($tag_name, $attr, $defaultIdValue = null) {
 		$attributes = array();
 		$id = false;
 		foreach ($elements as $element) {
-			if ($element{0} == '.') {
+			if ($element[0] == '.') {
 				$classes[] = substr($element, 1);
-			} else if ($element{0} == '#') {
+			} else if ($element[0] == '#') {
 				if ($id === false) $id = substr($element, 1);
 			} else if (strpos($element, '=') > 0) {
 				$parts = explode('=', $element, 2);
@@ -429,7 +429,7 @@ protected function _hashHTMLBlocks_inMarkdown($text, $indent = 0,
 			#
 			# Check for: Indented code block.
 			#
-			else if ($tag{0} == "\n" || $tag{0} == " ") {
+			else if ($tag[0] == "\n" || $tag[0] == " ") {
 				# Indented code block: pass it unchanged, will be handled 
 				# later.
 				$parsed .= $tag;
@@ -438,7 +438,7 @@ protected function _hashHTMLBlocks_inMarkdown($text, $indent = 0,
 			# Check for: Code span marker
 			# Note: need to check this after backtick fenced code blocks
 			#
-			else if ($tag{0} == "`") {
+			else if ($tag[0] == "`") {
 				# Find corresponding end marker.
 				$tag_re = preg_quote($tag);
 				if (preg_match('{^(?>.+?|\n(?!\n))*?(?<!`)'.$tag_re.'(?!`)}',
@@ -476,7 +476,7 @@ protected function _hashHTMLBlocks_inMarkdown($text, $indent = 0,
 			#            HTML Comments, processing instructions.
 			#
 			else if (preg_match('{^<(?:'.$this->clean_tags_re.')\b}', $tag) ||
-				$tag{1} == '!' || $tag{1} == '?')
+				$tag[1] == '!' || $tag[1] == '?')
 			{
 				# Need to parse tag and following text using the HTML parser.
 				# (don't check for markdown attribute)
@@ -495,8 +495,8 @@ protected function _hashHTMLBlocks_inMarkdown($text, $indent = 0,
 				#
 				# Increase/decrease nested tag count.
 				#
-				if ($tag{1} == '/')						$depth--;
-				else if ($tag{strlen($tag)-2} != '/')	$depth++;
+				if ($tag[1] == '/')						$depth--;
+				else if ($tag[strlen($tag)-2] != '/')	$depth++;
 
 				if ($depth < 0) {
 					#
@@ -600,7 +600,7 @@ protected function _hashHTMLBlocks_inHTML($text, $hash_method, $md_attr) {
 				# first character as filtered to prevent an infinite loop in the 
 				# parent function.
 				#
-				return array($original_text{0}, substr($original_text, 1));
+				return array($original_text[0], substr($original_text, 1));
 			}
 
 			$block_text .= $parts[0]; # Text before current tag.
@@ -612,7 +612,7 @@ protected function _hashHTMLBlocks_inHTML($text, $hash_method, $md_attr) {
 			#			 Comments and Processing Instructions.
 			#
 			if (preg_match('{^</?(?:'.$this->auto_close_tags_re.')\b}', $tag) ||
-				$tag{1} == '!' || $tag{1} == '?')
+				$tag[1] == '!' || $tag[1] == '?')
 			{
 				# Just add the tag to the block as if it was text.
 				$block_text .= $tag;
@@ -623,8 +623,8 @@ protected function _hashHTMLBlocks_inHTML($text, $hash_method, $md_attr) {
 				# the tag's name match base tag's.
 				#
 				if (preg_match('{^</?'.$base_tag_name_re.'\b}', $tag)) {
-					if ($tag{1} == '/')						$depth--;
-					else if ($tag{strlen($tag)-2} != '/')	$depth++;
+					if ($tag[1] == '/')						$depth--;
+					else if ($tag[strlen($tag)-2] != '/')	$depth++;
 				}
 
 				#
@@ -988,7 +988,7 @@ protected function _doHeaders_callback_setext($matches) {
 		if ($matches[3] == '-' && preg_match('{^- }', $matches[1]))
 			return $matches[0];
 
-		$level = $matches[3]{0} == '=' ? 1 : 2;
+		$level = $matches[3][0] == '=' ? 1 : 2;
 
 		$defaultId = is_callable($this->header_id_func) ? call_user_func($this->header_id_func, $matches[1]) : null;
 
@@ -1323,7 +1323,7 @@ protected function _doFencedCodeBlocks_callback($matches) {
 			array($this, '_doFencedCodeBlocks_newlines'), $codeblock);
 
 		if ($classname != "") {
-			if ($classname{0} == '.')
+			if ($classname[0] == '.')
 				$classname = substr($classname, 1);
 			$attr_str = ' class="'.$this->code_class_prefix.$classname.'"';
 		} else {