md5gbk_encodegbk_decodeutf8_encodeutf8_decode
str_timetime_str1970_dayslog_decodehtmlentities
html_entity_decodeunserializegbk_unserializeLeakon 
md5
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leakon => 374705bc8057061ff384d6e9b0f7d3e3
gbk_encode
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百度 => %B0%D9%B6%C8
gbk_decode
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%B0%D9%B6%C8 => 百度
utf8_encode
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百度 => %E7%99%BE%E5%BA%A6
utf8_decode
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%E7%99%BE%E5%BA%A6 => 百度
str_time
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1983-08-03 10:10 => 428724600 (Timezone:PRC)
time_str
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1173522000 => 2007-03-10 18:20 (Timezone:PRC)
1970_days
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13794 => 1790-01-01 + (13794 * 86400) => 2007-10-08 (Timezone:PRC)
log_decode
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\xb0\xd9\xb6\xc8 => 百度
htmlentities
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<a href="http://www.leakon.com/">Leakon's Blog</a> => &lt;a href=&quot;http://www.leakon.com/&quot;&gt;Leakon&#039;s Blog&lt;/a&gt;
html_entity_decode
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&lt;a href=&quot;http://www.leakon.com/&quot;&gt;Leakon&#039;s Blog&lt;/a&gt; => <a href="http://www.leakon.com/">Leakon's Blog</a>
unserialize
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a:2:{s:4:"name";s:6:"Leakon";s:3:"age";i:25;} => Array([name] => Leakon, [age] => 25)
gbk_unserialize
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a:2:{s:4:"name";s:6:"Leakon";s:3:"age";i:25;} => Array([name] => Leakon, [age] => 25)