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Example code of naotake51/evaluation

Informations about the package evaluation

Overview

naotake51/evaluation is a Composer package for creating a simple expression evaluation module. It allows you to register your own functions to evaluate expressions (strings).

Using

Literal

type example
int 123
float 0.5 .5
boolean True true TRUE False false FALSE
string "aaa" 'aaa' 'aa\'aa\\aa'
array [1, 2, [3, 4]]
object {'a': 1, 'b': {'c': 2}}

Operators and precedence

Operator example
! !true
* / % 5 * 2
+ - 5 + 2
== != === !== 1 === 1
&& true && false
|| true || false

Magic function

identifier description
__add Override the binary operator '+'.
__sub Override the binary operator '-'.
__mul Override the binary operator '*'.
__div Override the binary operator '/'.
__mod Override the binary operator '%'.
__or Override the binary operator '||'.
__and Override the binary operator '&&'.
__equal Override the binary operator '=='.
__not_equal Override the binary operator '!='.
__equal_strict Override the binary operator '==='.
__not_equal_strict Override the binary operator '!=='.
__not Override the unary operator '!'.

Parameter check

By passing an array, you can define the type of the argument. It is also possible to express OR by separating with '|'.

definition description
numeric Check with 'is_numeric'.
integer Check with 'is_integer'.
float Check with 'is_float'.
string Check with 'is_string'.
bool Check with 'is_bool'.
array Check with 'is_array'.
object Check with 'is_object'.
null Check with 'is_null'.
mixed All types are allowed.

Overload

Multiple patterns can be overloaded by registering them.

Run-time error

class description
Errors\EvaluationError Base class for errors that occur during evaluation.
Errors\SyntaxError syntactic error.
Errors\UndefineFunctionError Calling an undefined function.
Errors\ArgumentError Error in parameter check.

All versions of evaluation with dependencies

PHP Build Version
Package Version
Requires php Version ^7.4 || ^8.0
Composer command for our command line client (download client) This client runs in each environment. You don't need a specific PHP version etc. The first 20 API calls are free. Standard composer command

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