本文实例讲述了PHP生成plist数据的方法。分享给大家供大家参考。具体如下：

这段代码实现PHP数组转换为苹果plist XML或文本格式

<?PHP /** * PropertyList class * Implements writing Apple Property List (.plist) XML and text files from an array. * * @author Jesus A. Alvarez <zydeco@namedfork.net> */ function plist_encode_text ($obj) { $plist = new PropertyList($obj); return $plist->text(); } function plist_encode_xml ($obj) { $plist = new PropertyList($obj); return $plist->xml(); } class PropertyList { private $obj, $xml, $text; public function __construct ($obj) { $this->obj = $obj; } private static function is_assoc ($array) { return (is_array($array) && 0 !== count(array_diff_key($array, array_keys(array_keys($array))))); } public function xml () { if (isset($this->xml)) return $this->xml; $x = new XMLWriter(); $x->openMemory(); $x->setIndent(TRUE); $x->startDocument('1.0', 'UTF-8'); $x->writeDTD('plist', '-//Apple//DTD PLIST 1.0//EN', 'http://www.apple.com/DTDs/PropertyList-1.0.dtd'); $x->startElement('plist'); $x->writeAttribute('version', '1.0'); $this->xmlWriteValue($x, $this->obj); $x->endElement(); // plist $x->endDocument(); $this->xml = $x->outputMemory(); return $this->xml; } public function text() { if (isset($this->text)) return $this->text; $text = ''; $this->textWriteValue($text, $this->obj); $this->text = $text; return $this->text; } private function xmlWriteDict(XMLWriter $x, &$dict) { $x->startElement('dict'); foreach($dict as $k => &$v) { $x->writeElement('key', $k); $this->xmlWriteValue($x, $v); } $x->endElement(); // dict } private function xmlWriteArray(XMLWriter $x, &$arr) { $x->startElement('array'); foreach($arr as &$v) $this->xmlWriteValue($x, $v); $x->endElement(); // array } private function xmlWriteValue(XMLWriter $x, &$v) { if (is_int($v) || is_long($v)) $x->writeElement('integer', $v); elseif (is_float($v) || is_real($v) || is_double($v)) $x->writeElement('real', $v); elseif (is_string($v)) $x->writeElement('string', $v); elseif (is_bool($v)) $x->writeElement($v?'true':'false'); elseif (PropertyList::is_assoc($v)) $this->xmlWriteDict($x, $v); elseif (is_array($v)) $this->xmlWriteArray($x, $v); elseif (is_a($v, 'PlistData')) $x->writeElement('data', $v->base64EncodedData()); elseif (is_a($v, 'PlistDate')) $x->writeElement('date', $v->encodedDate()); else { trigger_error("Unsupported data type in plist ($v)", E_USER_WARNING); $x->writeElement('string', $v); } } private function textWriteValue(&$text, &$v, $indentLevel = 0) { if (is_int($v) || is_long($v)) $text .= sprintf("%d", $v); elseif (is_float($v) || is_real($v) || is_double($v)) $text .= sprintf("%g", $v); elseif (is_string($v)) $this->textWriteString($text, $v); elseif (is_bool($v)) $text .= $v?'YES':'NO'; elseif (PropertyList::is_assoc($v)) $this->textWriteDict($text, $v, $indentLevel); elseif (is_array($v)) $this->textWriteArray($text, $v, $indentLevel); elseif (is_a($v, 'PlistData')) $text .= '<' . $v->hexEncodedData() . '>'; elseif (is_a($v, 'PlistDate')) $text .= '"' . $v->ISO8601Date() . '"'; else { trigger_error("Unsupported data type in plist ($v)", E_USER_WARNING); $this->textWriteString($text, $v); } } private function textWriteString(&$text, &$str) { $oldlocale = setlocale(LC_CTYPE, "0"); if (ctype_alnum($str)) $text .= $str; else $text .= '"' . $this->textEncodeString($str) . '"'; setlocale(LC_CTYPE, $oldlocale); } private function textEncodeString(&$str) { $newstr = ''; $i = 0; $len = strlen($str); while($i < $len) { $ch = ord(substr($str, $i, 1)); if ($ch == 0x22 || $ch == 0x5C) { // escape double quote, backslash $newstr .= '' . chr($ch); $i++; } else if ($ch >= 0x07 && $ch <= 0x0D ){ // control characters with escape sequences $newstr .= '' . substr('abtnvfr', $ch - 7, 1); $i++; } else if ($ch < 32) { // other non-printable characters escaped as unicode $newstr .= sprintf('U%04x', $ch); $i++; } else if ($ch < 128) { // ascii printable $newstr .= chr($ch); $i++; } else if ($ch == 192 || $ch == 193) { // invalid encoding of ASCII characters $i++; } else if (($ch & 0xC0) == 0x80){ // part of a lost multibyte sequence, skip $i++; } else if (($ch & 0xE0) == 0xC0) { // U+0080 - U+07FF (2 bytes) $u = (($ch & 0x1F) << 6) | (ord(substr($str, $i+1, 1)) & 0x3F); $newstr .= sprintf('U%04x', $u); $i += 2; } else if (($ch & 0xF0) == 0xE0) { // U+0800 - U+FFFF (3 bytes) $u = (($ch & 0x0F) << 12) | ((ord(substr($str, $i+1, 1)) & 0x3F) << 6) | (ord(substr($str, $i+2, 1)) & 0x3F); $newstr .= sprintf('U%04x', $u); $i += 3; } else if (($ch & 0xF8) == 0xF0) { // U+10000 - U+3FFFF (4 bytes) $u = (($ch & 0x07) << 18) | ((ord(substr($str, $i+1, 1)) & 0x3F) << 12) | ((ord(substr($str, $i+2, 1)) & 0x3F) << 6) | (ord(substr($str, $i+3, 1)) & 0x3F); $newstr .= sprintf('U%04x', $u); $i += 4; } else { // 5 and 6 byte sequences are not valid UTF-8 $i++; } } return $newstr; } private function textWriteDict(&$text, &$dict, $indentLevel) { if (count($dict) == 0) { $text .= '{}'; return; } $text .= "{n"; $indent = ''; $indentLevel++; while(strlen($indent) < $indentLevel) $indent .= "t"; foreach($dict as $k => &$v) { $text .= $indent; $this->textWriteValue($text, $k); $text .= ' = '; $this->textWriteValue($text, $v, $indentLevel); $text .= ";n"; } $text .= substr($indent, 0, -1) . '}'; } private function textWriteArray(&$text, &$arr, $indentLevel) { if (count($arr) == 0) { $text .= '()'; return; } $text .= "(n"; $indent = ''; $indentLevel++; while(strlen($indent) < $indentLevel) $indent .= "t"; foreach($arr as &$v) { $text .= $indent; $this->textWriteValue($text, $v, $indentLevel); $text .= ",n"; } $text .= substr($indent, 0, -1) . ')'; } } class PlistData { private $data; public function __construct($str) { $this->data = $str; } public function base64EncodedData () { return base64_encode($this->data); } public function hexEncodedData () { $len = strlen($this->data); $hexstr = ''; for($i = 0; $i < $len; $i += 4) $hexstr .= bin2hex(substr($this->data, $i, 4)) . ' '; return substr($hexstr, 0, -1); } } class PlistDate { private $dateval; public function __construct($init = NULL) { if (is_int($init)) $this->dateval = $init; elseif (is_string($init)) $this->dateval = strtotime($init); elseif ($init == NULL) $this->dateval = time(); } public function ISO8601Date() { return gmdate('Y-m-dTH:i:sZ', $this->dateval); } } ?>

希望本文所述对大家的php程序设计有所帮助。