kernel/classes/ezcontentclass.php
public static function versionHistoryLimit( $class )
    {
        // default version limit
        $contentINI = eZINI::instance( 'content.ini' );
        $versionLimit = $contentINI->variable( 'VersionManagement', 'DefaultVersionHistoryLimit' );

        // version limit can't be < 2
        if ( $versionLimit < 2 )
        {
            eZDebug::writeWarning( "Global version history limit must be equal to or higher than 2", __METHOD__ );
            $versionLimit = 2;
        }

        // we need to take $class down to a class ID
        if ( is_numeric( $class ) )
        {
            if (!eZContentClass::classIdentifierByID( $class ) )
            {
                eZDebug::writeWarning( "class integer parameter doesn't match any content class ID", __METHOD__ );
                return $versionLimit;
            }
            $classID = (int)$class;
        }
        // literal identifier
        elseif ( is_string( $class ) )
        {
            $classID = eZContentClass::classIDByIdentifier( $class );
            if ( !$classID )
            {
                eZDebug::writeWarning( "class string parameter doesn't match any content class identifier", __METHOD__ );
                return $versionLimit;
            }
        }
        // eZContentClass object
        elseif ( is_object( $class ) )
        {
            if ( !$class instanceof eZContentClass )
            {
                eZDebug::writeWarning( "class object parameter is not an eZContentClass", __METHOD__ );
                return  $versionLimit;
            }
            else
            {
                $classID = $class->attribute( 'id' );
            }
        }

        $classLimitSetting = $contentINI->variable( 'VersionManagement', 'VersionHistoryClass' );
        $classArray = array_keys( $classLimitSetting );
        $limitsArray = array_values( $classLimitSetting );

        $classArray = eZContentClass::classIDByIdentifier( $classArray );

        foreach ( $classArray as $index => $id )
        {
            if ( $id == $classID )
            {
                $limit = $limitsArray[$index];
                // version limit can't be < 2
                if ( $limit < 2 )
                {
                    $classIdentifier = eZContentClass::classIdentifierByID( $classID );
                    eZDebug::writeWarning( "Version history limit for class {$classIdentifier} must be equal to or higher than 2", __METHOD__ );
                    $limit = 2;
                }
                $versionLimit = $limit;
            }
        }

        return $versionLimit;
    }
public static function versionHistoryLimit( $class )
    {
        // default version limit
        $contentINI = eZINI::instance( 'content.ini' );
        $versionLimit = $contentINI->variable( 'VersionManagement', 'DefaultVersionHistoryLimit' );

        // version limit can't be < 2
        if ( $versionLimit < 2 )
        {
            eZDebug::writeWarning( "Global version history limit must be equal to or higher than 2", __METHOD__ );
            $versionLimit = 2;
        }

        // we need to take $class down to a class ID
        if ( is_numeric( $class ) )
        {
            if (!eZContentClass::classIdentifierByID( $class ) )
            {
                eZDebug::writeWarning( "class integer parameter doesn't match any content class ID", __METHOD__ );
                return $versionLimit;
            }
            $classID = (int)$class;
        }
        // literal identifier
        elseif ( is_string( $class ) )
        {
            $classID = eZContentClass::classIDByIdentifier( $class );
            if ( !$classID )
            {
                eZDebug::writeWarning( "class string parameter doesn't match any content class identifier", __METHOD__ );
                return $versionLimit;
            }
        }
        // eZContentClass object
        elseif ( is_object( $class ) )
        {
            if ( !$class instanceof eZContentClass )
            {
                eZDebug::writeWarning( "class object parameter is not an eZContentClass", __METHOD__ );
                return  $versionLimit;
            }
            else
            {
                $classID = $class->attribute( 'id' );
            }
        }

        $classLimitSetting = $contentINI->variable( 'VersionManagement', 'VersionHistoryClass' );
        $classArray = array_keys( $classLimitSetting );
        $limitsArray = array_values( $classLimitSetting );

        $classArray = eZContentClass::classIDByIdentifier( $classArray );

        foreach ( $classArray as $index => $id )
        {
            if ( $id == $classID )
            {
                $limit = $limitsArray[$index];
                // version limit can't be < 2
                if ( $limit < 2 )
                {
                    $classIdentifier = eZContentClass::classIdentifierByID( $classID );
                    eZDebug::writeWarning( "Version history limit for class {$classIdentifier} must be equal to or higher than 2", __METHOD__ );
                    $limit = 2;
                }
                $versionLimit = $limit;
            }
        }

        return $versionLimit;
    }
public static function versionHistoryLimit ( $ class ) { // default version limit $ contentINI = eZINI :: instance ( 'content.ini' ) ; $ versionLimit = $ contentINI -> variable ( 'VersionManagement' , 'DefaultVersionHistoryLimit' ) ; // version limit can't be < 2 if ( $ versionLimit < 2 ) { eZDebug :: writeWarning ( "Global version history limit must be equal to or higher than 2" , __METHOD__ ) ; $ versionLimit = 2 ; } // we need to take $class down to a class ID if ( is_numeric ( $ class ) ) { if ( ! eZContentClass :: classIdentifierByID ( $ class ) ) { eZDebug :: writeWarning ( "class integer parameter doesn't match any content class ID" , __METHOD__ ) ; return $ versionLimit ; } $ classID = ( int ) $ class ; } // literal identifier elseif ( is_string ( $ class ) ) { $ classID = eZContentClass :: classIDByIdentifier ( $ class ) ; if ( ! $ classID ) { eZDebug :: writeWarning ( "class string parameter doesn't match any content class identifier" , __METHOD__ ) ; return $ versionLimit ; } } // eZContentClass object elseif ( is_object ( $ class ) ) { if ( ! $ class instanceof eZContentClass ) { eZDebug :: writeWarning ( "class object parameter is not an eZContentClass" , __METHOD__ ) ; return $ versionLimit ; } else { $ classID = $ class -> attribute ( 'id' ) ; } } $ classLimitSetting = $ contentINI -> variable ( 'VersionManagement' , 'VersionHistoryClass' ) ; $ classArray = array_keys ( $ classLimitSetting ) ; $ limitsArray = array_values ( $ classLimitSetting ) ; $ classArray = eZContentClass :: classIDByIdentifier ( $ classArray ) ; foreach ( $ classArray as $ index => $ id ) { if ( $ id == $ classID ) { $ limit = $ limitsArray [ $ index ] ; // version limit can't be < 2 if ( $ limit < 2 ) { $ classIdentifier = eZContentClass :: classIdentifierByID ( $ classID ) ; eZDebug :: writeWarning ( "Version history limit for class {$classIdentifier} must be equal to or higher than 2" , __METHOD__ ) ; $ limit = 2 ; } $ versionLimit = $ limit ; } } return $ versionLimit ; }
Computes the version history limit for a content class

@param mixed $class
Content class ID, content class identifier or content class object
@return int
@since 4.2
Computes the version history limit for a content class