LINE@官方帳號機器人PHP試做

1465549488137
試著寫了個PHP for LINE@ BOT API的小程式。
收到的訊息大致像這樣

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                            [createdTime] => 1465548731679
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                            [location] => 
                            [id] => 4442057145631
                            [to] => Array
                                (
                                    [0] => u0182d0ce673d4b950318618870074d49
                                )

                            [text] => 妳好
                            [contentMetadata] => Array
                                (
                                    [AT_RECV_MODE] => 2
                                    [SKIP_BADGE_COUNT] => true
                                )

                            [deliveredTime] => 0
                            [contentType] => 1
                            [seq] => 
                        )

                    [createdTime] => 1465548731699
                    [eventType] => 138311609000106303
                    [from] => u206d25c2ea6bd87c17655609a1c37cb8
                    [fromChannel] => 1341301815
                    [id] => WB1521-3502883001
                    [to] => Array
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                    [toChannel] => 1470435594
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