php 学习笔记 (1)

与java.String对比
[table]
||id|java.String|php.String|
||0| equals | strcmp |
||1| substring(start,end)| substr(string,start,length) |
||2| indexOf(str, fromIndex)| strpos stripos , strstr stristr strrpos|
||3| concat(str) (+)| (.)|
||4| startsWith ||
||5| endsWith ||
||6| getBytes | |
||7| matches | |
||8| replace | str_replace(find, replace, str, count) , str_ireplace|
||9| replaceAll ||
||10| split | |
||11| toLowerCase | strtolower() |
||12| toUpperCase | strtoupper()|
||13| trim() | trim() ltrim() rtrim()|
||14| length | strlen |
||15| | md5|
||16| format|fprintf|
[/table]

php join md5