What is php? How can this problem be solved? How can this problem be solved?

What is the error in php? How can this problem be solved? How can this problem be solved? Parseerror: syntaxerror, unexpectedT_STATIC, expectingT_OLD_FUNCTIONorT_FUNCTIONorT_VARor '} 'inh: \ ho php what is the error? How can this problem be solved? How can this problem be solved?
Parse error: syntax error, unexpected T_STATIC, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in H: \ host \ zicc.nwnu.edu.cn \ httpdocs \ dlcms \ include \ core \ cpApp. class. php on line 5


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It may be a php version problem.
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Php on your server is php4, and your program needs php5 to run

What should I do? Upgrade