How to reuse the IF condition code in PHP

PHP Code Reuse

I have an if condition (which is a combination of many expressions) and is used on many pages, but the condition is changing at any time, such as:
if (condition)
Statement

How can I reuse the code for this condition? Thank you so much!

Reply to discussion (solution)

Define

if (function (AFAEFAE))
Encapsulate your conditional call into a function, called according to a different parameter.

$expr = ' conditional expression ';
if (eval ("Return $expr;")) {
...
}
But it is necessary to ensure that the variables that participate in the operation exist

if (function (AFAEFAE))
Encapsulate your conditional call into a function, called according to a different parameter.

The part of the change is extracted as a parameter, and the contents of the package function are left unchanged.

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