TypeComparison

Parameters

mixed	$a	Left operand
mixed	$b	Right operand

Return Value

number

0 if $a and $b are equal. - < 0 If $a is lesser than $b - > 0 if $a is greater than $b This method uses the following rules - NULL is lower than everything except itself. - FALSE is lower than anything that evaluates to TRUE and equals anything that evaluates to FALSE (except NULL). - TRUE is greater than anything that evaluates to FALSE. - Two numbers are cmopared using the minus operator - Two strings are compared using the \strcmp() function - Numbers are compared to strings by casting the string to number if possible

Exceptions

ComparisonException

Parameters

DateTimeInterface	$a	First operand
DateTimeInterface|string|integer|float	$b	Second operand. DateTime, string representation of a DateTime, UNIX timestamp or julian day
number	$fractionEpsilon	Threshold to use in \DateTimeInterface fraction field comparison. If $fractionEpsilon > 1 A UNIX timestamp comparison is made instead.

Return Value

number

Exceptions

NotComparableException

Parameters

	$a
	$b

Parameters

	$a
	$b

Parameters

	$a
	$b