本文实例讲述了PHP parse_ini_file函数的应用与扩展操作。分享给大家供大家参考，具体如下：
parse_ini_file($filename, $process_sections = false, $scanner_mode = INI_SCANNER_NORMAL)解析一个配置文件。
filename要解析的文件名；
process_sections设置为true时，得到一个多维数组，包括配置文件中每一节的名称和设置，默认为false;
解析成功返回关联数组，失败返回false。列举一下官网的例子，也引用了官网的扩展实例parse_ini_file_multi()。
下面是配置文件内容：
[first_section]one = 1two = 2name = test[second_section]path = "/tmp/test"url = "http://test.com/login.php"[third_section]php_version[] = "5.0"php_version[] = "5.1"php_version[] = "5.5"[dictionary]foo[debug] = truefoo[path] = /some/path[fourth_section]fold1.fold2.fold3 = "a"fold1.fold2.fold4 = "b"fold1.fold2.fold5 = "b"
下面是PHP文件内容：
function parse_ini_file_multi($file, $process_sections = false, $scanner_mode = INI_SCANNER_NORMAL){ $explode_str = "."; $escape_char = """; $data = parse_ini_file($file, $process_sections, $scanner_mode); if (!$process_sections) { $data = array($data); } foreach ($data as $section_key => $section) { foreach($section as $key => $value){ if(strpos($key, $explode_str)){ if(substr($key, 0, 1) !== $escape_char){ $sub_keys = explode($explode_str, $key); $subs =& $data[$section_key]; echo ""."=========".""; print_r($subs); print_r($data); foreach($sub_keys as $sub_key){ if (!isset($subs[$sub_key])) { $subs[$sub_key] = []; } $subs =& $subs[$sub_key]; echo ""."++++++++".""; print_r($subs); print_r($data); } $subs = $value; echo ""."----------".""; print_r($subs); print_r($data); unset($data[$section_key][$key]); }else{ $new_key = trim($key, $escape_char); $data[$section_key][$new_key] = $value; unset($data[$section_key][$key]); } } } } if (!$process_sections) { $data = $data[0]; } return $data;}$arr = parse_ini_file("file.ini");print_r($arr);echo ""."================="."";$arr = parse_ini_file_multi("file.ini",true);echo ""."================="."";print_r($arr);运行结果：
Array ( [one] => 1 [two] => 2 [name] => test [path] => /tmp/test [url] => http://test.com/login.php [php_version] => Array ( [0] => 5.0 [1] => 5.1 [2] => 5.5 ) [foo] => Array ( [debug] => 1 [path] => /some/path ) [fold1.fold2.fold3] => a [fold1.fold2.fold4] => b [fold1.fold2.fold5] => b ) ================= ========= Array ( [fold1.fold2.fold3] => a [fold1.fold2.fold4] => b [fold1.fold2.fold5] => b ) Array ( [first_section] => Array ( [one] => 1 [two] => 2 [name] => test ) [second_section] => Array ( [path] => /tmp/test [url] => http://test.com/login.php ) [third_section] => Array ( [php_version] => Array ( [0] => 5.0 [1] => 5.1 [2] => 5.5 ) ) [dictionary] => Array ( [foo] => Array ( [debug] => 1 [path] => /some/path ) ) [fourth_section] => Array ( [fold1.fold2.fold3] => a [fold1.fold2.fold4] => b [fold1.fold2.fold5] => b ) ) ++++++++ Array ( ) Array ( [first_section] => Array ( [one] => 1 [two] => 2 [name] => test ) [second_section] => Array ( [path] => /tmp/test [url] => http://test.com/login.php ) [third_section] => Array ( [php_version] => Array ( [0] => 5.0 [1] => 5.1 [2] => 5.5 ) ) [dictionary] => Array ( [foo] => Array ( [debug] => 1 [path] => /some/path ) ) [fourth_section] => Array ( [fold1.fold2.fold3] => a [fold1.fold2.fold4] => b [fold1.fold2.fold5] => b [fold1] => Array ( ) ) ) ++++++++ Array ( ) Array ( [first_section] => Array ( [one] => 1 [two] => 2 [name] => test ) [second_section] => Array ( [path] => /tmp/test [url] => http://test.com/login.php ) [third_section] => Array ( [php_version] => Array ( [0] => 5.0 [1] => 5.1 [2] => 5.5 ) ) [dictionary] => Array ( [foo] => Array ( [debug] => 1 [path] => /some/path ) ) [fourth_section] => Array ( [fold1.fold2.fold3] => a [fold1.fold2.fold4] => b [fold1.fold2.fold5] => b [fold1] => Array ( [fold2] => Array ( ) ) ) ) ++++++++ Array ( ) Array ( [first_section] => Array ( [one] => 1 [two] => 2 [name] => test ) [second_section] => Array ( [path] => /tmp/test [url] => http://test.com/login.php ) [third_section] => Array ( [php_version] => Array ( [0] => 5.0 [1] => 5.1 [2] => 5.5 ) ) [dictionary] => Array ( [foo] => Array ( [debug] => 1 [path] => /some/path ) ) [fourth_section] => Array ( [fold1.fold2.fold3] => a [fold1.fold2.fold4] => b [fold1.fold2.fold5] => b [fold1] => Array ( [fold2] => Array ( [fold3] => Array ( ) ) ) ) ) ---------- aArray ( [first_section] => Array ( [one] => 1 [two] => 2 [name] => test ) [second_section] => Array ( [path] => /tmp/test [url] => http://test.com/login.php ) [third_section] => Array ( [php_version] => Array ( [0] => 5.0 [1] => 5.1 [2] => 5.5 ) ) [dictionary] => Array ( [foo] => Array ( [debug] => 1 [path] => /some/path ) ) [fourth_section] => Array ( [fold1.fold2.fold3] => a [fold1.fold2.fold4] => b [fold1.fold2.fold5] => b [fold1] => Array ( [fold2] => Array ( [fold3] => a ) ) ) ) ========= Array ( [fold1.fold2.fold4] => b [fold1.fold2.fold5] => b [fold1] => Array ( [fold2] => Array ( [fold3] => a ) ) ) Array ( [first_section] => Array ( [one] => 1 [two] => 2 [name] => test ) [second_section] => Array ( [path] => /tmp/test [url] => http://test.com/login.php ) [third_section] => Array ( [php_version] => Array ( [0] => 5.0 [1] => 5.1 [2] => 5.5 ) ) [dictionary] => Array ( [foo] => Array ( [debug] => 1 [path] => /some/path ) ) [fourth_section] => Array ( [fold1.fold2.fold4] => b [fold1.fold2.fold5] => b [fold1] => Array ( [fold2] => Array ( [fold3] => a ) ) ) ) ++++++++ Array ( [fold2] => Array ( [fold3] => a ) ) Array ( [first_section] => Array ( [one] => 1 [two] => 2 [name] => test ) [second_section] => Array ( [path] => /tmp/test [url] => http://test.com/login.php ) [third_section] => Array ( [php_version] => Array ( [0] => 5.0 [1] => 5.1 [2] => 5.5 ) ) [dictionary] => Array ( [foo] => Array ( [debug] => 1 [path] => /some/path ) ) [fourth_section] => Array ( [fold1.fold2.fold4] => b [fold1.fold2.fold5] => b [fold1] => Array ( [fold2] => Array ( [fold3] => a ) ) ) ) ++++++++ Array ( [fold3] => a ) Array ( [first_section] => Array ( [one] => 1 [two] => 2 [name] => test ) [second_section] => Array ( [path] => /tmp/test [url] => http://test.com/login.php ) [third_section] => Array ( [php_version] => Array ( [0] => 5.0 [1] => 5.1 [2] => 5.5 ) ) [dictionary] => Array ( [foo] => Array ( [debug] => 1 [path] => /some/path ) ) [fourth_section] => Array ( [fold1.fold2.fold4] => b [fold1.fold2.fold5] => b [fold1] => Array ( [fold2] => Array ( [fold3] => a ) ) ) ) ++++++++ Array ( ) Array ( [first_section] => Array ( [one] => 1 [two] => 2 [name] => test ) [second_section] => Array ( [path] => /tmp/test [url] => http://test.com/login.php ) [third_section] => Array ( [php_version] => Array ( [0] => 5.0 [1] => 5.1 [2] => 5.5 ) ) [dictionary] => Array ( [foo] => Array ( [debug] => 1 [path] => /some/path ) ) [fourth_section] => Array ( [fold1.fold2.fold4] => b [fold1.fold2.fold5] => b [fold1] => Array ( [fold2] => Array ( [fold3] => a [fold4] => Array ( ) ) ) ) ) ---------- bArray ( [first_section] => Array ( [one] => 1 [two] => 2 [name] => test ) [second_section] => Array ( [path] => /tmp/test [url] => http://test.com/login.php ) [third_section] => Array ( [php_version] => Array ( [0] => 5.0 [1] => 5.1 [2] => 5.5 ) ) [dictionary] => Array ( [foo] => Array ( [debug] => 1 [path] => /some/path ) ) [fourth_section] => Array ( [fold1.fold2.fold4] => b [fold1.fold2.fold5] => b [fold1] => Array ( [fold2] => Array ( [fold3] => a [fold4] => b ) ) ) ) ========= Array ( [fold1.fold2.fold5] => b [fold1] => Array ( [fold2] => Array ( [fold3] => a [fold4] => b ) ) ) Array ( [first_section] => Array ( [one] => 1 [two] => 2 [name] => test ) [second_section] => Array ( [path] => /tmp/test [url] => http://test.com/login.php ) [third_section] => Array ( [php_version] => Array ( [0] => 5.0 [1] => 5.1 [2] => 5.5 ) ) [dictionary] => Array ( [foo] => Array ( [debug] => 1 [path] => /some/path ) ) [fourth_section] => Array ( [fold1.fold2.fold5] => b [fold1] => Array ( [fold2] => Array ( [fold3] => a [fold4] => b ) ) ) ) ++++++++ Array ( [fold2] => Array ( [fold3] => a [fold4] => b ) ) Array ( [first_section] => Array ( [one] => 1 [two] => 2 [name] => test ) [second_section] => Array ( [path] => /tmp/test [url] => http://test.com/login.php ) [third_section] => Array ( [php_version] => Array ( [0] => 5.0 [1] => 5.1 [2] => 5.5 ) ) [dictionary] => Array ( [foo] => Array ( [debug] => 1 [path] => /some/path ) ) [fourth_section] => Array ( [fold1.fold2.fold5] => b [fold1] => Array ( [fold2] => Array ( [fold3] => a [fold4] => b ) ) ) ) ++++++++ Array ( [fold3] => a [fold4] => b ) Array ( [first_section] => Array ( [one] => 1 [two] => 2 [name] => test ) [second_section] => Array ( [path] => /tmp/test [url] => http://test.com/login.php ) [third_section] => Array ( [php_version] => Array ( [0] => 5.0 [1] => 5.1 [2] => 5.5 ) ) [dictionary] => Array ( [foo] => Array ( [debug] => 1 [path] => /some/path ) ) [fourth_section] => Array ( [fold1.fold2.fold5] => b [fold1] => Array ( [fold2] => Array ( [fold3] => a [fold4] => b ) ) ) ) ++++++++ Array ( ) Array ( [first_section] => Array ( [one] => 1 [two] => 2 [name] => test ) [second_section] => Array ( [path] => /tmp/test [url] => http://test.com/login.php ) [third_section] => Array ( [php_version] => Array ( [0] => 5.0 [1] => 5.1 [2] => 5.5 ) ) [dictionary] => Array ( [foo] => Array ( [debug] => 1 [path] => /some/path ) ) [fourth_section] => Array ( [fold1.fold2.fold5] => b [fold1] => Array ( [fold2] => Array ( [fold3] => a [fold4] => b [fold5] => Array ( ) ) ) ) ) ---------- bArray ( [first_section] => Array ( [one] => 1 [two] => 2 [name] => test ) [second_section] => Array ( [path] => /tmp/test [url] => http://test.com/login.php ) [third_section] => Array ( [php_version] => Array ( [0] => 5.0 [1] => 5.1 [2] => 5.5 ) ) [dictionary] => Array ( [foo] => Array ( [debug] => 1 [path] => /some/path ) ) [fourth_section] => Array ( [fold1.fold2.fold5] => b [fold1] => Array ( [fold2] => Array ( [fold3] => a [fold4] => b [fold5] => b ) ) ) ) ================= Array ( [first_section] => Array ( [one] => 1 [two] => 2 [name] => test ) [second_section] => Array ( [path] => /tmp/test [url] => http://test.com/login.php ) [third_section] => Array ( [php_version] => Array ( [0] => 5.0 [1] => 5.1 [2] => 5.5 ) ) [dictionary] => Array ( [foo] => Array ( [debug] => 1 [path] => /some/path ) ) [fourth_section] => Array ( [fold1] => Array ( [fold2] => Array ( [fold3] => a [fold4] => b [fold5] => b ) ) ) )
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