本文实例讲述了PHP实现的json类。分享给大家供大家参考。具体如下:
这里注意json_encode只有(PHP 5 >= 5.2.0, PECL json >= 1.2.0)才有
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<?php /* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */ /** * Converts to and from JSON format. * * JSON (JavaScript Object Notation) is a lightweight data-interchange * format. It is easy for humans to read and write. It is easy for machines * to parse and generate. It is based on a subset of the JavaScript * Programming Language, Standard ECMA-262 3rd Edition - December 1999. * This feature can also be found in Python. JSON is a text format that is * completely language independent but uses conventions that are familiar * to programmers of the C-family of languages, including C, C++, C#, Java, * JavaScript, Perl, TCL, and many others. These properties make JSON an * ideal data-interchange language. * * This package provides a simple encoder and decoder for JSON notation. It * is intended for use with client-side Javascript applications that make * use of HTTPRequest to perform server communication functions - data can * be encoded into JSON notation for use in a client-side javascript, or * decoded from incoming Javascript requests. JSON format is native to * Javascript, and can be directly eval()'ed with no further parsing * overhead * * All strings should be in ASCII or UTF-8 format! * * LICENSE: Redistribution and use in source and binary forms, with or * without modification, are permitted provided that the following * conditions are met: Redistributions of source code must retain the * above copyright notice, this list of conditions and the following * disclaimer. Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following disclaimer * in the documentation and/or other materials provided with the * distribution. * * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN * NO EVENT SHALL CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH * DAMAGE. * * @category * @package Services_JSON * @author Michal Migurski <mike-json@teczno.com> * @author Matt Knapp <mdknapp[at]gmail[dot]com> * @author Brett Stimmerman <brettstimmerman[at]gmail[dot]com> * @copyright 2005 Michal Migurski * @version CVS: $Id: JSON.php,v 1.31 2006/06/28 05:54:17 migurski Exp $ * @license http://www.opensource.org/licenses/bsd-license.php * @link http://pear.php.net/pepr/pepr-proposal-show.php?id=198 */ /** * Marker constant for Services_JSON::decode(), used to flag stack state */ define( 'SERVICES_JSON_SLICE' , 1); /** * Marker constant for Services_JSON::decode(), used to flag stack state */ define( 'SERVICES_JSON_IN_STR' , 2); /** * Marker constant for Services_JSON::decode(), used to flag stack state */ define( 'SERVICES_JSON_IN_ARR' , 3); /** * Marker constant for Services_JSON::decode(), used to flag stack state */ define( 'SERVICES_JSON_IN_OBJ' , 4); /** * Marker constant for Services_JSON::decode(), used to flag stack state */ define( 'SERVICES_JSON_IN_CMT' , 5); /** * Behavior switch for Services_JSON::decode() */ define( 'SERVICES_JSON_LOOSE_TYPE' , 16); /** * Behavior switch for Services_JSON::decode() */ define( 'SERVICES_JSON_SUPPRESS_ERRORS' , 32); /** * Converts to and from JSON format. * * Brief example of use: * * <code> * // create a new instance of Services_JSON * $json = new Services_JSON(); * * // convert a complexe value to JSON notation, and send it to the browser * $value = array('foo', 'bar', array(1, 2, 'baz'), array(3, array(4))); * $output = $json->encode($value); * * print($output); * // prints: ["foo","bar",[1,2,"baz"],[3,[4]]] * * // accept incoming POST data, assumed to be in JSON notation * $input = file_get_contents('php://input', 1000000); * $value = $json->decode($input); * </code> */ class Services_JSON { /** * constructs a new JSON instance * * @param int $use object behavior flags; combine with boolean-OR * * possible values: * - SERVICES_JSON_LOOSE_TYPE: loose typing. * "{...}" syntax creates associative arrays * instead of objects in decode(). * - SERVICES_JSON_SUPPRESS_ERRORS: error suppression. * Values which can't be encoded (e.g. resources) * appear as NULL instead of throwing errors. * By default, a deeply-nested resource will * bubble up with an error, so all return values * from encode() should be checked with isError() */ function Services_JSON( $use = 0) { $this -> use = $use ; } /** * convert a string from one UTF-16 char to one UTF-8 char * * Normally should be handled by mb_convert_encoding, but * provides a slower PHP-only method for installations * that lack the multibye string extension. * * @param string $utf16 UTF-16 character * @return string UTF-8 character * @access private */ function utf162utf8( $utf16 ) { // oh please oh please oh please oh please oh please if (function_exists( 'mb_convert_encoding' )) { return mb_convert_encoding( $utf16 , 'UTF-8' , 'UTF-16' ); } $bytes = (ord( $utf16 {0}) << 8) | ord( $utf16 {1}); switch (true) { case ((0x7F & $bytes ) == $bytes ): // this case should never be reached, because we are in ASCII range // see: http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8 return chr (0x7F & $bytes ); case (0x07FF & $bytes ) == $bytes : // return a 2-byte UTF-8 character // see: http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8 return chr (0xC0 | (( $bytes >> 6) & 0x1F)) . chr (0x80 | ( $bytes & 0x3F)); case (0xFFFF & $bytes ) == $bytes : // return a 3-byte UTF-8 character // see: http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8 return chr (0xE0 | (( $bytes >> 12) & 0x0F)) . chr (0x80 | (( $bytes >> 6) & 0x3F)) . chr (0x80 | ( $bytes & 0x3F)); } // ignoring UTF-32 for now, sorry return '' ; } /** * convert a string from one UTF-8 char to one UTF-16 char * * Normally should be handled by mb_convert_encoding, but * provides a slower PHP-only method for installations * that lack the multibye string extension. * * @param string $utf8 UTF-8 character * @return string UTF-16 character * @access private */ function utf82utf16( $utf8 ) { // oh please oh please oh please oh please oh please if (function_exists( 'mb_convert_encoding' )) { return mb_convert_encoding( $utf8 , 'UTF-16' , 'UTF-8' ); } switch ( strlen ( $utf8 )) { case 1: // this case should never be reached, because we are in ASCII range // see: http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8 return $utf8 ; case 2: // return a UTF-16 character from a 2-byte UTF-8 char // see: http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8 return chr (0x07 & (ord( $utf8 {0}) >> 2)) . chr ((0xC0 & (ord( $utf8 {0}) << 6)) | (0x3F & ord( $utf8 {1}))); case 3: // return a UTF-16 character from a 3-byte UTF-8 char // see: http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8 return chr ((0xF0 & (ord( $utf8 {0}) << 4)) | (0x0F & (ord( $utf8 {1}) >> 2))) . chr ((0xC0 & (ord( $utf8 {1}) << 6)) | (0x7F & ord( $utf8 {2}))); } // ignoring UTF-32 for now, sorry return '' ; } /** * encodes an arbitrary variable into JSON format * * @param mixed $var any number, boolean, string, array, or object to be encoded. * see argument 1 to Services_JSON() above for array-parsing behavior. * if var is a strng, note that encode() always expects it * to be in ASCII or UTF-8 format! * * @return mixed JSON string representation of input var or an error if a problem occurs * @access public */ function encode( $var ) { switch ( gettype ( $var )) { case 'boolean' : return $var ? 'true' : 'false' ; case 'NULL' : return 'null' ; case 'integer' : return (int) $var ; case 'double' : case 'float' : return (float) $var ; case 'string' : // STRINGS ARE EXPECTED TO BE IN ASCII OR UTF-8 FORMAT $ascii = '' ; $strlen_var = strlen ( $var ); /* * Iterate over every character in the string, * escaping with a slash or encoding to UTF-8 where necessary */ for ( $c = 0; $c < $strlen_var ; ++ $c ) { $ord_var_c = ord( $var { $c }); switch (true) { case $ord_var_c == 0x08: $ascii .= '\b' ; break ; case $ord_var_c == 0x09: $ascii .= '\t' ; break ; case $ord_var_c == 0x0A: $ascii .= '\n' ; break ; case $ord_var_c == 0x0C: $ascii .= '\f' ; break ; case $ord_var_c == 0x0D: $ascii .= '\r' ; break ; case $ord_var_c == 0x22: case $ord_var_c == 0x2F: case $ord_var_c == 0x5C: // double quote, slash, slosh $ascii .= '\\' . $var { $c }; break ; case (( $ord_var_c >= 0x20) && ( $ord_var_c <= 0x7F)): // characters U-00000000 - U-0000007F (same as ASCII) $ascii .= $var { $c }; break ; case (( $ord_var_c & 0xE0) == 0xC0): // characters U-00000080 - U-000007FF, mask 110XXXXX // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8 $char = pack( 'C*' , $ord_var_c , ord( $var { $c + 1})); $c += 1; $utf16 = $this ->utf82utf16( $char ); $ascii .= sprintf( '\u%04s' , bin2hex( $utf16 )); break ; case (( $ord_var_c & 0xF0) == 0xE0): // characters U-00000800 - U-0000FFFF, mask 1110XXXX // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8 $char = pack( 'C*' , $ord_var_c , ord( $var { $c + 1}), ord( $var { $c + 2})); $c += 2; $utf16 = $this ->utf82utf16( $char ); $ascii .= sprintf( '\u%04s' , bin2hex( $utf16 )); break ; case (( $ord_var_c & 0xF8) == 0xF0): // characters U-00010000 - U-001FFFFF, mask 11110XXX // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8 $char = pack( 'C*' , $ord_var_c , ord( $var { $c + 1}), ord( $var { $c + 2}), ord( $var { $c + 3})); $c += 3; $utf16 = $this ->utf82utf16( $char ); $ascii .= sprintf( '\u%04s' , bin2hex( $utf16 )); break ; case (( $ord_var_c & 0xFC) == 0xF8): // characters U-00200000 - U-03FFFFFF, mask 111110XX // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8 $char = pack( 'C*' , $ord_var_c , ord( $var { $c + 1}), ord( $var { $c + 2}), ord( $var { $c + 3}), ord( $var { $c + 4})); $c += 4; $utf16 = $this ->utf82utf16( $char ); $ascii .= sprintf( '\u%04s' , bin2hex( $utf16 )); break ; case (( $ord_var_c & 0xFE) == 0xFC): // characters U-04000000 - U-7FFFFFFF, mask 1111110X // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8 $char = pack( 'C*' , $ord_var_c , ord( $var { $c + 1}), ord( $var { $c + 2}), ord( $var { $c + 3}), ord( $var { $c + 4}), ord( $var { $c + 5})); $c += 5; $utf16 = $this ->utf82utf16( $char ); $ascii .= sprintf( '\u%04s' , bin2hex( $utf16 )); break ; } } return '"' . $ascii . '"' ; case 'array' : /* * As per JSON spec if any array key is not an integer * we must treat the the whole array as an object. We * also try to catch a sparsely populated associative * array with numeric keys here because some JS engines * will create an array with empty indexes up to * max_index which can cause memory issues and because * the keys, which may be relevant, will be remapped * otherwise. * * As per the ECMA and JSON specification an object may * have any string as a property. Unfortunately due to * a hole in the ECMA specification if the key is a * ECMA reserved word or starts with a digit the * parameter is only accessible using ECMAScript's * bracket notation. */ // treat as a JSON object if ( is_array ( $var ) && count ( $var ) && ( array_keys ( $var ) !== range(0, sizeof( $var ) - 1))) { $properties = array_map ( array ( $this , 'name_value' ), array_keys ( $var ), array_values ( $var )); foreach ( $properties as $property ) { if (Services_JSON::isError( $property )) { return $property ; } } return '{' . join( ',' , $properties ) . '}' ; } // treat it like a regular array $elements = array_map ( array ( $this , 'encode' ), $var ); foreach ( $elements as $element ) { if (Services_JSON::isError( $element )) { return $element ; } } return '[' . join( ',' , $elements ) . ']' ; case 'object' : $vars = get_object_vars( $var ); $properties = array_map ( array ( $this , 'name_value' ), array_keys ( $vars ), array_values ( $vars )); foreach ( $properties as $property ) { if (Services_JSON::isError( $property )) { return $property ; } } return '{' . join( ',' , $properties ) . '}' ; default : return ( $this -> use & SERVICES_JSON_SUPPRESS_ERRORS) ? 'null' : new Services_JSON_Error( gettype ( $var ). " can not be encoded as JSON string" ); } } /** * array-walking function for use in generating JSON-formatted name-value pairs * * @param string $name name of key to use * @param mixed $value reference to an array element to be encoded * * @return string JSON-formatted name-value pair, like '"name":value' * @access private */ function name_value( $name , $value ) { $encoded_value = $this ->encode( $value ); if (Services_JSON::isError( $encoded_value )) { return $encoded_value ; } return $this ->encode( strval ( $name )) . ':' . $encoded_value ; } /** * reduce a string by removing leading and trailing comments and whitespace * * @param $str string string value to strip of comments and whitespace * * @return string string value stripped of comments and whitespace * @access private */ function reduce_string( $str ) { $str = preg_replace( array ( // eliminate single line comments in '// ...' form '#^\s*//(.+)$#m' , // eliminate multi-line comments in '/* ... */' form, at start of string '#^\s*/\*(.+)\*/#Us' , // eliminate multi-line comments in '/* ... */' form, at end of string '#/\*(.+)\*/\s*$#Us' ), '' , $str ); // eliminate extraneous space return trim( $str ); } /** * decodes a JSON string into appropriate variable * * @param string $str JSON-formatted string * * @return mixed number, boolean, string, array, or object * corresponding to given JSON input string. * See argument 1 to Services_JSON() above for object-output behavior. * Note that decode() always returns strings * in ASCII or UTF-8 format! * @access public */ function decode( $str ) { $str = $this ->reduce_string( $str ); switch ( strtolower ( $str )) { case 'true' : return true; case 'false' : return false; case 'null' : return null; default : $m = array (); if ( is_numeric ( $str )) { // Lookie-loo, it's a number // This would work on its own, but I'm trying to be // good about returning integers where appropriate: // return (float)$str; // Return float or int, as appropriate return ((float) $str == (integer) $str ) ? (integer) $str : (float) $str ; } elseif (preg_match( '/^("|\').*(\1)$/s' , $str , $m ) && $m [1] == $m [2]) { // STRINGS RETURNED IN UTF-8 FORMAT $delim = substr ( $str , 0, 1); $chrs = substr ( $str , 1, -1); $utf8 = '' ; $strlen_chrs = strlen ( $chrs ); for ( $c = 0; $c < $strlen_chrs ; ++ $c ) { $substr_chrs_c_2 = substr ( $chrs , $c , 2); $ord_chrs_c = ord( $chrs { $c }); switch (true) { case $substr_chrs_c_2 == '\b' : $utf8 .= chr (0x08); ++ $c ; break ; case $substr_chrs_c_2 == '\t' : $utf8 .= chr (0x09); ++ $c ; break ; case $substr_chrs_c_2 == '\n' : $utf8 .= chr (0x0A); ++ $c ; break ; case $substr_chrs_c_2 == '\f' : $utf8 .= chr (0x0C); ++ $c ; break ; case $substr_chrs_c_2 == '\r' : $utf8 .= chr (0x0D); ++ $c ; break ; case $substr_chrs_c_2 == '\\"' : case $substr_chrs_c_2 == '\\\'' : case $substr_chrs_c_2 == '\\\\' : case $substr_chrs_c_2 == '\\/' : if (( $delim == '"' && $substr_chrs_c_2 != '\\\'' ) || ( $delim == "'" && $substr_chrs_c_2 != '\\"')) { $utf8 .= $chrs {++ $c }; } break ; case preg_match( '/\\\u[0-9A-F]{4}/i' , substr ( $chrs , $c , 6)): // single, escaped unicode character $utf16 = chr (hexdec( substr ( $chrs , ( $c + 2), 2))) . chr (hexdec( substr ( $chrs , ( $c + 4), 2))); $utf8 .= $this ->utf162utf8( $utf16 ); $c += 5; break ; case ( $ord_chrs_c >= 0x20) && ( $ord_chrs_c <= 0x7F): $utf8 .= $chrs { $c }; break ; case ( $ord_chrs_c & 0xE0) == 0xC0: // characters U-00000080 - U-000007FF, mask 110XXXXX //see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8 $utf8 .= substr ( $chrs , $c , 2); ++ $c ; break ; case ( $ord_chrs_c & 0xF0) == 0xE0: // characters U-00000800 - U-0000FFFF, mask 1110XXXX // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8 $utf8 .= substr ( $chrs , $c , 3); $c += 2; break ; case ( $ord_chrs_c & 0xF8) == 0xF0: // characters U-00010000 - U-001FFFFF, mask 11110XXX // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8 $utf8 .= substr ( $chrs , $c , 4); $c += 3; break ; case ( $ord_chrs_c & 0xFC) == 0xF8: // characters U-00200000 - U-03FFFFFF, mask 111110XX // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8 $utf8 .= substr ( $chrs , $c , 5); $c += 4; break ; case ( $ord_chrs_c & 0xFE) == 0xFC: // characters U-04000000 - U-7FFFFFFF, mask 1111110X // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8 $utf8 .= substr ( $chrs , $c , 6); $c += 5; break ; } } return $utf8 ; } elseif (preg_match( '/^\[.*\]$/s' , $str ) || preg_match( '/^\{.*\}$/s' , $str )) { // array, or object notation if ( $str {0} == '[' ) { $stk = array (SERVICES_JSON_IN_ARR); $arr = array (); } else { if ( $this -> use & SERVICES_JSON_LOOSE_TYPE) { $stk = array (SERVICES_JSON_IN_OBJ); $obj = array (); } else { $stk = array (SERVICES_JSON_IN_OBJ); $obj = new stdClass(); } } array_push ( $stk , array ( 'what' => SERVICES_JSON_SLICE, 'where' => 0, 'delim' => false)); $chrs = substr ( $str , 1, -1); $chrs = $this ->reduce_string( $chrs ); if ( $chrs == '' ) { if (reset( $stk ) == SERVICES_JSON_IN_ARR) { return $arr ; } else { return $obj ; } } //print("\nparsing {$chrs}\n"); $strlen_chrs = strlen ( $chrs ); for ( $c = 0; $c <= $strlen_chrs ; ++ $c ) { $top = end ( $stk ); $substr_chrs_c_2 = substr ( $chrs , $c , 2); if (( $c == $strlen_chrs ) || (( $chrs { $c } == ',' ) && ( $top [ 'what' ] == SERVICES_JSON_SLICE))) { // found a comma that is not inside a string, array, etc., // OR we've reached the end of the character list $slice = substr ( $chrs , $top [ 'where' ], ( $c - $top [ 'where' ])); array_push ( $stk , array ( 'what' => SERVICES_JSON_SLICE, 'where' => ( $c + 1), 'delim' => false)); //print("Found split at {$c}: ".substr($chrs, $top['where'], (1 + $c - $top['where']))."\n"); if (reset( $stk ) == SERVICES_JSON_IN_ARR) { // we are in an array, so just push an element onto the stack array_push ( $arr , $this ->decode( $slice )); } elseif (reset( $stk ) == SERVICES_JSON_IN_OBJ) { // we are in an object, so figure // out the property name and set an // element in an associative array, // for now $parts = array (); if (preg_match( '/^\s*(["\'].*[^\\\]["\'])\s*:\s*(\S.*),?$/Uis' , $slice , $parts )) { // "name":value pair $key = $this ->decode( $parts [1]); $val = $this ->decode( $parts [2]); if ( $this -> use & SERVICES_JSON_LOOSE_TYPE) { $obj [ $key ] = $val ; } else { $obj -> $key = $val ; } } elseif (preg_match( '/^\s*(\w+)\s*:\s*(\S.*),?$/Uis' , $slice , $parts )) { // name:value pair, where name is unquoted $key = $parts [1]; $val = $this ->decode( $parts [2]); if ( $this -> use & SERVICES_JSON_LOOSE_TYPE) { $obj [ $key ] = $val ; } else { $obj -> $key = $val ; } } } } elseif ((( $chrs { $c } == '"' ) || ( $chrs { $c } == " '")) && ($top[' what'] != SERVICES_JSON_IN_STR)) { // found a quote, and we are not inside a string array_push ( $stk , array ( 'what' => SERVICES_JSON_IN_STR, 'where' => $c , 'delim' => $chrs { $c })); //print("Found start of string at {$c}\n"); } elseif (( $chrs { $c } == $top [ 'delim' ]) && ( $top [ 'what' ] == SERVICES_JSON_IN_STR) && (( strlen ( substr ( $chrs , 0, $c )) - strlen (rtrim( substr ( $chrs , 0, $c ), '\\' ))) % 2 != 1)) { // found a quote, we're in a string, and it's not escaped // we know that it's not escaped becase there is _not_ an // odd number of backslashes at the end of the string so far array_pop ( $stk ); //print("Found end of string at {$c}: ".substr($chrs, $top['where'], (1 + 1 + $c - $top['where']))."\n"); } elseif (( $chrs { $c } == '[' ) && in_array( $top [ 'what' ], array (SERVICES_JSON_SLICE, SERVICES_JSON_IN_ARR, SERVICES_JSON_IN_OBJ))) { // found a left-bracket, and we are in an array, object, or slice array_push ( $stk , array ( 'what' => SERVICES_JSON_IN_ARR, 'where' => $c , 'delim' => false)); //print("Found start of array at {$c}\n"); } elseif (( $chrs { $c } == ']' ) && ( $top [ 'what' ] == SERVICES_JSON_IN_ARR)) { // found a right-bracket, and we're in an array array_pop ( $stk ); //print("Found end of array at {$c}: ".substr($chrs, $top['where'], (1 + $c - $top['where']))."\n"); } elseif (( $chrs { $c } == '{' ) && in_array( $top [ 'what' ], array (SERVICES_JSON_SLICE, SERVICES_JSON_IN_ARR, SERVICES_JSON_IN_OBJ))) { // found a left-brace, and we are in an array, object, or slice array_push ( $stk , array ( 'what' => SERVICES_JSON_IN_OBJ, 'where' => $c , 'delim' => false)); //print("Found start of object at {$c}\n"); } elseif (( $chrs { $c } == '}' ) && ( $top [ 'what' ] == SERVICES_JSON_IN_OBJ)) { // found a right-brace, and we're in an object array_pop ( $stk ); //print("Found end of object at {$c}: ".substr($chrs, $top['where'], (1 + $c - $top['where']))."\n"); } elseif (( $substr_chrs_c_2 == '/*' ) && in_array( $top [ 'what' ], array (SERVICES_JSON_SLICE, SERVICES_JSON_IN_ARR, SERVICES_JSON_IN_OBJ))) { // found a comment start, and we are in an array, object, or slice array_push ( $stk , array ( 'what' => SERVICES_JSON_IN_CMT, 'where' => $c , 'delim' => false)); $c ++; //print("Found start of comment at {$c}\n"); } elseif (( $substr_chrs_c_2 == '*/' ) && ( $top [ 'what' ] == SERVICES_JSON_IN_CMT)) { // found a comment end, and we're in one now array_pop ( $stk ); $c ++; for ( $i = $top [ 'where' ]; $i <= $c ; ++ $i ) $chrs = substr_replace( $chrs , ' ' , $i , 1); //print("Found end of comment at {$c}: ".substr($chrs, $top['where'], (1 + $c - $top['where']))."\n"); } } if (reset( $stk ) == SERVICES_JSON_IN_ARR) { return $arr ; } elseif (reset( $stk ) == SERVICES_JSON_IN_OBJ) { return $obj ; } } } } /** * @todo Ultimately, this should just call PEAR::isError() */ function isError( $data , $code = null) { if ( class_exists ( 'pear' )) { return PEAR::isError( $data , $code ); } elseif ( is_object ( $data ) && (get_class( $data ) == 'services_json_error' || is_subclass_of ( $data , 'services_json_error' ))) { return true; } return false; } } if ( class_exists ( 'PEAR_Error' )) { class Services_JSON_Error extends PEAR_Error { function Services_JSON_Error( $message = 'unknown error' , $code = null, $mode = null, $options = null, $userinfo = null) { parent::PEAR_Error( $message , $code , $mode , $options , $userinfo ); } } } else { /** * @todo Ultimately, this class shall be descended from PEAR_Error */ class Services_JSON_Error { function Services_JSON_Error( $message = 'unknown error' , $code = null, $mode = null, $options = null, $userinfo = null) { } } } ?> |
希望本文所述对大家的php程序设计有所帮助。