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doctrine2/manual/docs/Working with objects - Component overview - Record - Getting record state.php

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Every Doctrine_Record has a state. First of all record can be transient or persistent.
Every record that is retrieved from database is persistent and every newly created record is transient.
If a Doctrine_Record is retrieved from database but the only loaded property is its primary key, then this record
has a state called proxy.
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Every transient and persistent Doctrine_Record is either clean or dirty. Doctrine_Record is clean when none of its properties are changed and
dirty when atleast one of its properties has changed.
<code type="php">
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$state = $record->state();
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switch($state):
case Doctrine_Record::STATE_PROXY:
// record is in proxy state,
// meaning its persistent but not all of its properties are
// loaded from the database
break;
case Doctrine_Record::STATE_TCLEAN:
// record is transient clean,
// meaning its transient and
// none of its properties are changed
break;
case Doctrine_Record::STATE_TDIRTY:
// record is transient dirty,
// meaning its transient and
// some of its properties are changed
break;
case Doctrine_Record::STATE_DIRTY:
// record is dirty,
// meaning its persistent and
// some of its properties are changed
break;
case Doctrine_Record::STATE_CLEAN:
// record is clean,
// meaning its persistent and
// none of its properties are changed
break;
endswitch;
</code>