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Safeguard against existing function declarations. #23

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181 changes: 100 additions & 81 deletions includes/functions.php
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Original file line number Diff line number Diff line change
Expand Up @@ -21,87 +21,96 @@ function imagepalettetotruecolor(&$src) {

// mPDF 5.7
// Replace a section of an array with the elements in reverse
function array_splice_reverse(&$arr, $offset, $length) {
$tmp = (array_reverse(array_slice($arr, $offset, $length)));
array_splice($arr, $offset, $length, $tmp);
}


function array_insert(&$array, $value, $offset) {
if (is_array($array)) {
$array = array_values($array);
$offset = intval($offset);
if ($offset < 0 || $offset >= count($array)) { array_push($array, $value); }
else if ($offset == 0) { array_unshift($array, $value); }
else {
$temp = array_slice($array, 0, $offset);
array_push($temp, $value);
$array = array_slice($array, $offset);
$array = array_merge($temp, $array);
}
}
else { $array = array($value); }
return count($array);
if(!function_exists('array_splice_reverse')) {
function array_splice_reverse(&$arr, $offset, $length) {
$tmp = (array_reverse(array_slice($arr, $offset, $length)));
array_splice($arr, $offset, $length, $tmp);
}
}

// mPDF 5.7.4 URLs
function urldecode_parts($url) {
$file=$url;
$query='';
if (preg_match('/[?]/',$url)) {
$bits = preg_split('/[?]/',$url,2);
$file=$bits[0];
$query='?'.$bits[1];
}
$file = rawurldecode($file);
$query = urldecode($query);
return $file.$query;
if(!function_exists('array_insert')) {
function array_insert(&$array, $value, $offset) {
if (is_array($array)) {
$array = array_values($array);
$offset = intval($offset);
if ($offset < 0 || $offset >= count($array)) { array_push($array, $value); }
else if ($offset == 0) { array_unshift($array, $value); }
else {
$temp = array_slice($array, 0, $offset);
array_push($temp, $value);
$array = array_slice($array, $offset);
$array = array_merge($temp, $array);
}
}
else { $array = array($value); }
return count($array);
}
}


function _strspn($str1, $str2, $start=null, $length=null) {
$numargs = func_num_args();
if ($numargs == 2) {
return strspn($str1, $str2);
}
else if ($numargs == 3) {
return strspn($str1, $str2, $start);
}
else {
return strspn($str1, $str2, $start, $length);
}
// mPDF 5.7.4 URLs
if(!function_exists('urldecode_parts')) {
function urldecode_parts($url) {
$file=$url;
$query='';
if (preg_match('/[?]/',$url)) {
$bits = preg_split('/[?]/',$url,2);
$file=$bits[0];
$query='?'.$bits[1];
}
$file = rawurldecode($file);
$query = urldecode($query);
return $file.$query;
}
}

if(!function_exists('_strspn')) {
function _strspn($str1, $str2, $start=null, $length=null) {
$numargs = func_num_args();
if ($numargs == 2) {
return strspn($str1, $str2);
}
else if ($numargs == 3) {
return strspn($str1, $str2, $start);
}
else {
return strspn($str1, $str2, $start, $length);
}
}
}

function _strcspn($str1, $str2, $start=null, $length=null) {
$numargs = func_num_args();
if ($numargs == 2) {
return strcspn($str1, $str2);
}
else if ($numargs == 3) {
return strcspn($str1, $str2, $start);
}
else {
return strcspn($str1, $str2, $start, $length);
}
if(!function_exists('_strcspn')) {
function _strcspn($str1, $str2, $start=null, $length=null) {
$numargs = func_num_args();
if ($numargs == 2) {
return strcspn($str1, $str2);
}
else if ($numargs == 3) {
return strcspn($str1, $str2, $start);
}
else {
return strcspn($str1, $str2, $start, $length);
}
}
}

function _fgets (&$h, $force=false) {
$startpos = ftell($h);
$s = fgets($h, 1024);
if ($force && preg_match("/^([^\r\n]*[\r\n]{1,2})(.)/",trim($s), $ns)) {
$s = $ns[1];
fseek($h,$startpos+strlen($s));
}
return $s;
if(!function_exists('_fgets')) {
function _fgets (&$h, $force=false) {
$startpos = ftell($h);
$s = fgets($h, 1024);
if ($force && preg_match("/^([^\r\n]*[\r\n]{1,2})(.)/",trim($s), $ns)) {
$s = $ns[1];
fseek($h,$startpos+strlen($s));
}
return $s;
}
}


// For PHP4 compatability
if(!function_exists('str_ireplace')) {
function str_ireplace($search,$replace,$subject) {
$search = preg_quote($search, "/");
return preg_replace("/".$search."/i", $replace, $subject);
return preg_replace("/".$search."/i", $replace, $subject);
}
}
if(!function_exists('htmlspecialchars_decode')) {
Expand All @@ -110,13 +119,15 @@ function htmlspecialchars_decode ($str) {
}
}

function PreparePreText($text,$ff='//FF//') {
$text = htmlspecialchars($text);
if ($ff) { $text = str_replace($ff,'</pre><formfeed /><pre>',$text); }
return ('<pre>'.$text.'</pre>');
if(!function_exists('PreparePreText')) {
function PreparePreText($text,$ff='//FF//') {
$text = htmlspecialchars($text);
if ($ff) { $text = str_replace($ff,'</pre><formfeed /><pre>',$text); }
return ('<pre>'.$text.'</pre>');
}
}

if(!function_exists('strcode2utf')){
if(!function_exists('strcode2utf')){
function strcode2utf($str,$lo=true) {
//converts all the &#nnn; and &#xhhh; in a string to Unicode
// mPDF 5.7
Expand All @@ -131,21 +142,29 @@ function strcode2utf($str,$lo=true) {
return $str;
}
}
function code2utf_callback($matches) {
return code2utf($matches[1], 0);
if(!function_exists('code2utf_callback')){
function code2utf_callback($matches) {
return code2utf($matches[1], 0);
}
}
function code2utf_lo_callback($matches) {
return code2utf($matches[1], 1);
if(!function_exists('code2utf_lo_callback')){
function code2utf_lo_callback($matches) {
return code2utf($matches[1], 1);
}
}
function codeHex2utf_callback($matches) {
return codeHex2utf($matches[1], 0);
if(!function_exists('codeHex2utf_callback')){
function codeHex2utf_callback($matches) {
return codeHex2utf($matches[1], 0);
}
}
function codeHex2utf_lo_callback($matches) {
return codeHex2utf($matches[1], 1);
if(!function_exists('codeHex2utf_lo_callback')){
function codeHex2utf_lo_callback($matches) {
return codeHex2utf($matches[1], 1);
}
}


if(!function_exists('code2utf')){
if(!function_exists('code2utf')){
function code2utf($num,$lo=true){
//Returns the utf string corresponding to the unicode value
if ($num<128) {
Expand All @@ -160,7 +179,7 @@ function code2utf($num,$lo=true){
}


if(!function_exists('codeHex2utf')){
if(!function_exists('codeHex2utf')){
function codeHex2utf($hex,$lo=true){
$num = hexdec($hex);
if (($num<128) && !$lo) return '&#x'.$hex.';';
Expand All @@ -169,4 +188,4 @@ function codeHex2utf($hex,$lo=true){
}


?>
?>