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<?php if (!function_exists('json_encode')) { function json_encode($it) { if (!($assoc = is_object($it)) && !is_array($it)) { return _js_enc_value($it); } if ($assoc) { $it = get_object_vars($it); } else { $assoc = $it === array_values($it); } $data = array(); foreach ($it as $k => $v) { $v = _js_enc_value($v); if ($assoc) { $k = (string)$k; if (preg_match('//u', $k)) { $k = _js_enc_value($k); $data[] = $k . ':' . $v; } } else { $data[] = $v; } } if ($assoc) { $bl = '{'; $br = '}'; } else { $bl = '['; $br = ']'; } return $bl . implode(',', $data) . $br; } function _js_enc_value($value) { switch (true) { case is_array($value): case is_object($value): return json_encode($value); case $value === null: case is_resource($value): return 'null'; case is_bool($value): return $value ? 'true' : 'false'; case is_string($value) && preg_match('//u', $value): return '"' . _js_uc_esc($value) . '"'; default: return $value; } } function _js_uc_esc($value) { $pattern = "@[\x08-\x0a\x0c\x0d\\\\\"/]|([^\x08-\x0a\x0c\x0d\x20-\x7f\\\\\"/])++@u"; return preg_replace_callback($pattern, '_js_uc_esc_cb', $value); } function _js_uc_esc_cb($matches) { switch (true) { case isset($matches[1]): $char = mb_convert_encoding($matches[0], 'UTF-16', 'UTF-8'); $str = ''; $len = strlen($char); for ($i = 0; $i < $len; $i += 2) { $str .= sprintf('\\u%02x%02x', ord($char[$i]), ord($char[$i + 1]) ); } return $str; default: return addcslashes($matches[0], "\x08\x09\x0a\x0c\x0d\\\"/"); } } } $var = array( array( 'text', 1, 1.1, true, false, null, array(), new stdClass, ), array( '&\'/"' => "\r\n\t", '' => '', ), array( '0' => 'hoge', '1' => 'foo', ), (object)array( '0' => 'hoge', '1' => 'foo', ), array( '0' => 'hoge', '2' => 'foo', ), (object)array( '0' => 'hoge', '2' => 'foo', ), ); var_dump(json_encode($var));
Output for 5.2.2 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.10, 7.2.0 - 7.2.33, 7.3.12 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
string(148) "[["text",1,1.1,true,false,null,[],{}],{"&'\/\"":"\r\n\t","":""},["hoge","foo"],{"0":"hoge","1":"foo"},{"0":"hoge","2":"foo"},{"0":"hoge","2":"foo"}]"
Output for 5.2.0 - 5.2.1
string(142) "[["text",1,1.1,true,false,null,[],{}],{"&'\/\"":"\r\n\t"},["hoge","foo"],{"0":"hoge","1":"foo"},{"0":"hoge","2":"foo"},{"0":"hoge","2":"foo"}]"
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6
string(152) "{"0":{"0":"text","1":1,"2":1.1,"3":true,"4":false,"5":null,"6":{},"7":{}},"1":["\r\n\t",""],"2":{"0":"hoge","1":"foo"},"3":{},"4":["hoge","foo"],"5":{}}"
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9
string(192) "{"0":{"0":"text","1":1,"2":1.1,"3":true,"4":false,"5":null,"6":{},"7":{}},"1":["\r\n\t",""],"2":{"0":"hoge","1":"foo"},"3":{"0":"hoge","1":"foo"},"4":["hoge","foo"],"5":{"0":"hoge","2":"foo"}}"

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