基于逻辑表达式在PHP中过滤数组

Question

I'm trying to implement a filter function in PHP. My two-dimensional input array looks like the following:

name(string)    age(integer)    reg_date(date)
----------------------------------------------
John            22              12/03/2015
Anne            23              14/04/2015
Marry           24              01/02/2015
Tim             55              13/03/2015

What I want is a filter that can take a logical expression and apply it to the input source like the following (own draft):

{name:'age' type:'integer', operator:'==', value:'23'} OR {name:'age' type:'integer', operator:'==', value:'24'} AND {name:'reg_date' type:'date', operator:'>', value:'12/03/2015', format:'d/m/Y'}

Expressed in words: Give me all entries where variable age is 23 or 24 and variable reg_date is later than 12/03/2015

For each datatype (type), a filter should exist that should be able to process datatype dependent operations (for example, a date-filter should use the format field to parse the date in the correct format). It should easily be possible to add new datatypes.

The correct output for the expression above would be

name(string)    age(integer)    reg_date(date)
----------------------------------------------
Anne            23              14/04/2015

My question: Do I have to write my own lexer to parse the logical expression (which could become rather complex) and apply a filter I've written on my own or do filter functions I need already exist? I tried to parse my array into an XML structure and use XPath, unfortunately XPath 1.0 which is used by PHP cannot handle date formats. I took a look at filter_var in the PHP Filter class, but it looks like logical expressions cannot be used there.

Answer 1

尝试使用array_walk（）php函数