Class Expr

Factory for Webmozart\Expression\Expression instances.

Use this class to build expressions:ons:

$expr = Expr::greaterThan(20)->orLessThan(10);

You can evaluate the expression with another value Expression::evaluate():

if ($expr->evaluate($value)) { // do something...
}

You can also evaluate expressions by arrays by passing the array keys as second argument:

$expr = Expr::greaterThan(20, 'age') ->andStartsWith('Thomas', 'name');

$values = array( 'age' => 35, 'name' => 'Thomas Edison',
);

if ($expr->evaluate($values)) { // do something...
}

Namespace: Webmozart\Expression
Author: Bernhard Schussek bschussek@gmail.com
Since: 1.0
Located at Expr.php

Methods summary
`public static Webmozart\Expression\Logic\Not`	# `not( Webmozart\Expression\Expression $expr )` Negate an expression. Negate an expression. Parameters `$expr` The negated expression. Returns `Webmozart\Expression\Logic\Not` The created negation.
`public static Webmozart\Expression\Logic\AlwaysTrue`	# `true( )` Always true (tautology). Always true (tautology). Returns `Webmozart\Expression\Logic\AlwaysTrue` The created expression.
`public static Webmozart\Expression\Logic\AlwaysFalse`	# `false( )` Always false (contradiction). Always false (contradiction). Returns `Webmozart\Expression\Logic\AlwaysFalse` The created expression.
`public static Webmozart\Expression\Selector\Key`	# `key( string\|integer $key, Webmozart\Expression\Expression $expr )` Check that the value of an array key matches an expression. Check that the value of an array key matches an expression. Parameters `$key` The array key. `$expr` The evaluated expression. Returns `Webmozart\Expression\Selector\Key` The created expression.
`public static Webmozart\Expression\Selector\Method`	# `method( string $methodName, mixed $args, Webmozart\Expression\Expression $expr,… )` Check that the result of a method call matches an expression. Check that the result of a method call matches an expression. Parameters `$methodName` The name of the method to call. `$args` $args... The method arguments. `$expr`,… The evaluated expression. Returns `Webmozart\Expression\Selector\Method` The created expression.
`public static Webmozart\Expression\Selector\Method`	# `property( string $propertyName, Webmozart\Expression\Expression $expr )` Check that the value of a property matches an expression. Check that the value of a property matches an expression. Parameters `$propertyName` The name of the property. `$expr` The evaluated expression. Returns `Webmozart\Expression\Selector\Method` The created expression.
`public static Webmozart\Expression\Selector\AtLeast`	# `atLeast( integer $count, Webmozart\Expression\Expression $expr )` Check that at least N entries of a traversable value match an expression. Check that at least N entries of a traversable value match an expression. Parameters `$count` The minimum number of entries that need to match. `$expr` The evaluated expression. Returns `Webmozart\Expression\Selector\AtLeast` The created expression.
`public static Webmozart\Expression\Selector\AtMost`	# `atMost( integer $count, Webmozart\Expression\Expression $expr )` Check that at most N entries of a traversable value match an expression. Check that at most N entries of a traversable value match an expression. Parameters `$count` The maximum number of entries that need to match. `$expr` The evaluated expression. Returns `Webmozart\Expression\Selector\AtMost` The created expression.
`public static Webmozart\Expression\Selector\Exactly`	# `exactly( integer $count, Webmozart\Expression\Expression $expr )` Check that exactly N entries of a traversable value match an expression. Check that exactly N entries of a traversable value match an expression. Parameters `$count` The number of entries that need to match. `$expr` The evaluated expression. Returns `Webmozart\Expression\Selector\Exactly` The created expression.
`public static Webmozart\Expression\Selector\All`	# `all( Webmozart\Expression\Expression $expr )` Check that all entries of a traversable value match an expression. Check that all entries of a traversable value match an expression. Parameters `$expr` The evaluated expression. Returns `Webmozart\Expression\Selector\All` The created expression.
`public static Webmozart\Expression\Selector\Count`	# `count( Webmozart\Expression\Expression $expr )` Check that the count of a collection matches an expression. Check that the count of a collection matches an expression. Parameters `$expr` The evaluated expression. Returns `Webmozart\Expression\Selector\Count` The created expression.
`public static Webmozart\Expression\Constraint\Same`	# `null( )` Check that a value is null. Check that a value is null. Returns `Webmozart\Expression\Constraint\Same` The created expression.
`public static Webmozart\Expression\Constraint\NotSame`	# `notNull( )` Check that a value is not null. Check that a value is not null. Returns `Webmozart\Expression\Constraint\NotSame` The created expression.
`public static Webmozart\Expression\Constraint\IsEmpty`	# `isEmpty( )` Check that a value is empty. Check that a value is empty. Returns `Webmozart\Expression\Constraint\IsEmpty` The created expression.
`public static Webmozart\Expression\Logic\Not`	# `notEmpty( )` Check that a value is not empty. Check that a value is not empty. Returns `Webmozart\Expression\Logic\Not` The created expression.
`public static Webmozart\Expression\Constraint\IsEmpty`	# `isInstanceOf( string $className )` Check that a value is an instance of a given class. Check that a value is an instance of a given class. Parameters `$className` The class name. Returns `Webmozart\Expression\Constraint\IsEmpty` The created expression.
`public static Webmozart\Expression\Constraint\Equals`	# `equals( mixed $value )` Check that a value equals another value. Check that a value equals another value. Parameters `$value` The compared value. Returns `Webmozart\Expression\Constraint\Equals` The created expression.
`public static Webmozart\Expression\Constraint\NotEquals`	# `notEquals( mixed $value )` Check that a value does not equal another value. Check that a value does not equal another value. Parameters `$value` The compared value. Returns `Webmozart\Expression\Constraint\NotEquals` The created expression.
`public static Webmozart\Expression\Constraint\Same`	# `same( mixed $value )` Check that a value is identical to another value. Check that a value is identical to another value. Parameters `$value` The compared value. Returns `Webmozart\Expression\Constraint\Same` The created expression.
`public static Webmozart\Expression\Constraint\NotSame`	# `notSame( mixed $value )` Check that a value is not identical to another value. Check that a value is not identical to another value. Parameters `$value` The compared value. Returns `Webmozart\Expression\Constraint\NotSame` The created expression.
`public static Webmozart\Expression\Constraint\GreaterThan`	# `greaterThan( mixed $value )` Check that a value is greater than another value. Check that a value is greater than another value. Parameters `$value` The compared value. Returns `Webmozart\Expression\Constraint\GreaterThan` The created expression.
`public static Webmozart\Expression\Constraint\GreaterThanEqual`	# `greaterThanEqual( mixed $value )` Check that a value is greater than or equal to another value. Check that a value is greater than or equal to another value. Parameters `$value` The compared value. Returns `Webmozart\Expression\Constraint\GreaterThanEqual` The created expression.
`public static Webmozart\Expression\Constraint\LessThan`	# `lessThan( mixed $value )` Check that a value is less than another value. Check that a value is less than another value. Parameters `$value` The compared value. Returns `Webmozart\Expression\Constraint\LessThan` The created expression.
`public static Webmozart\Expression\Constraint\LessThanEqual`	# `lessThanEqual( mixed $value )` Check that a value is less than or equal to another value. Check that a value is less than or equal to another value. Parameters `$value` The compared value. Returns `Webmozart\Expression\Constraint\LessThanEqual` The created expression.
`public static Webmozart\Expression\Constraint\In`	# `in( array $values )` Check that a value occurs in a list of values. Check that a value occurs in a list of values. Parameters `$values` The compared values. Returns `Webmozart\Expression\Constraint\In` The created expression.
`public static Webmozart\Expression\Constraint\Matches`	# `matches( string $regExp )` Check that a value matches a regular expression. Check that a value matches a regular expression. Parameters `$regExp` The regular expression. Returns `Webmozart\Expression\Constraint\Matches` The created expression.
`public static Webmozart\Expression\Constraint\StartsWith`	# `startsWith( string $prefix )` Check that a value starts with a given string. Check that a value starts with a given string. Parameters `$prefix` The prefix string. Returns `Webmozart\Expression\Constraint\StartsWith` The created expression.
`public static Webmozart\Expression\Constraint\EndsWith`	# `endsWith( string $suffix )` Check that a value ends with a given string. Check that a value ends with a given string. Parameters `$suffix` The suffix string. Returns `Webmozart\Expression\Constraint\EndsWith` The created expression.
`public static Webmozart\Expression\Constraint\Contains`	# `contains( string $string )` Check that a value contains a given string. Check that a value contains a given string. Parameters `$string` The sub-string. Returns `Webmozart\Expression\Constraint\Contains` The created expression.
`public static Webmozart\Expression\Constraint\KeyExists`	# `keyExists( string $keyName )` Check that a value key exists. Check that a value key exists. Parameters `$keyName` The key name. Returns `Webmozart\Expression\Constraint\KeyExists` The created expression.
`public static Webmozart\Expression\Constraint\KeyNotExists`	# `keyNotExists( string $keyName )` Check that a value key does not exist. Check that a value key does not exist. Parameters `$keyName` The key name. Returns `Webmozart\Expression\Constraint\KeyNotExists` The created expression.

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Class Expr

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