42 lines
1.1 KiB
PHP
42 lines
1.1 KiB
PHP
<?php
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namespace Cron;
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use DateTimeInterface;
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/**
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* CRON field interface
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*/
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interface FieldInterface
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{
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/**
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* Check if the respective value of a DateTime field satisfies a CRON exp
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*
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* @param DateTimeInterface $date DateTime object to check
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* @param string $value CRON expression to test against
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*
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* @return bool Returns TRUE if satisfied, FALSE otherwise
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*/
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public function isSatisfiedBy(DateTimeInterface $date, $value);
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/**
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* When a CRON expression is not satisfied, this method is used to increment
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* or decrement a DateTime object by the unit of the cron field
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*
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* @param DateTimeInterface &$date DateTime object to change
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* @param bool $invert (optional) Set to TRUE to decrement
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*
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* @return FieldInterface
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*/
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public function increment(DateTimeInterface &$date, $invert = false);
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/**
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* Validates a CRON expression for a given field
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*
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* @param string $value CRON expression value to validate
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*
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* @return bool Returns TRUE if valid, FALSE otherwise
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*/
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public function validate($value);
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}
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