PHP | xml_parser_create()函数
xml_parser_create()函数是PHP中的一个内置函数,用于创建 XML 解析器。
句法:
resource xml_parser_create( string $encoding )
参数:此函数接受可选的单个参数$encoding 。它指定字符编码:
- 用于PHP 4 中的输入/输出
- 仅适用于PHP 5 的输出
- 对于 5.0.0 和 5.0.1,默认输出字符集是 ISO-8859-1
- 从 5.0.2 默认输出字符集是 UTF-8
返回值:此函数返回资源处理程序,成功时其他一些 XML 函数将使用该资源处理程序,失败时返回 False。
笔记:
- 此函数适用于PHP 4.0.0 及更新版本。
- 这些示例可能不适用于在线 IDE。因此,尝试在本地服务器或PHP托管服务器上运行它。
gfg.xml 文件:
HTML
user123
firstname lastname
+91-9876543210
I am John Doe. Live in Kolkata, India.
PHP
XML
user123
firstname lastname
+91-9876543210
I am John Doe. Live in Kolkata, India.
PHP
USER DATA
";
break;
case "USERNAME":
echo "Username: ";
break;
case "NAME":
echo "Name: ";
break;
case "PHONE":
echo "Phone no: ";
break;
case "DETAIL":
echo "More about user: ";
}
}
// Element handler function named "ending_handler"
function ending_handler($parser, $element_name) {
echo "
";
}
// Character handler function named "char_handler"
function char_handler($parser, $data) {
echo $data;
}
// Setting the element handlers
xml_set_element_handler($parser,
"starting_handler", "ending_handler");
// Setting character data handler
xml_set_character_data_handler($parser, "char_handler");
// Opening xml file
$fp = fopen("geeks.xml", "r");
// Reading xml file
while ($data = fread($fp, 4096)) {
xml_parse($parser, $data, feof($fp)) or
// Display error while xml parsing
die (sprintf("XML Error: %s at line %d",
// Error string
xml_error_string(xml_get_error_code($parser)),
// Error line number
xml_get_current_line_number($parser))
);
}
// Free to xml parser
xml_parser_free($parser);
// Closing file stream
fclose($fp);
?>
方案一:
PHP
输出:
user123
firstname lastname
+91-9876543210
I am John Doe. Live in Kolkata, India.
极客.xml 文件:
XML
user123
firstname lastname
+91-9876543210
I am John Doe. Live in Kolkata, India.
方案二:
PHP
USER DATA
";
break;
case "USERNAME":
echo "Username: ";
break;
case "NAME":
echo "Name: ";
break;
case "PHONE":
echo "Phone no: ";
break;
case "DETAIL":
echo "More about user: ";
}
}
// Element handler function named "ending_handler"
function ending_handler($parser, $element_name) {
echo "
";
}
// Character handler function named "char_handler"
function char_handler($parser, $data) {
echo $data;
}
// Setting the element handlers
xml_set_element_handler($parser,
"starting_handler", "ending_handler");
// Setting character data handler
xml_set_character_data_handler($parser, "char_handler");
// Opening xml file
$fp = fopen("geeks.xml", "r");
// Reading xml file
while ($data = fread($fp, 4096)) {
xml_parse($parser, $data, feof($fp)) or
// Display error while xml parsing
die (sprintf("XML Error: %s at line %d",
// Error string
xml_error_string(xml_get_error_code($parser)),
// Error line number
xml_get_current_line_number($parser))
);
}
// Free to xml parser
xml_parser_free($parser);
// Closing file stream
fclose($fp);
?>
输出:
USER DATA
Username: user123
Name: firstname lastname
Phone no: +91-9876543210
More about user: I am John Doe. Live in Kolkata, India.
参考: https://www. PHP.net/manual/en/函数.xml-parser-create。 PHP